TailMyPicks

Check any Polymarket wallet’s real record.

Wallet 0xba7c…38c7

Rebuilt .

Summary

Qualified picks
78
Categories scored
15
Categories below 50
8

Best Category: Ncaa Basketball, grading 54 out of 100 (+0.04 per pick).

Best Category Ncaa Basketball at 54 out of 100; worst NBA at 42.

What is a Tail Score?

A mark out of 100, per Category. 50 means no edge at all — this wallet did about what the prices it paid implied it would. Above 50 it beat those prices; below 50 it did worse than them.

The scale does not move. 100 is a wallet beating the prices it paid by 0.45 per pick and 0 is losing to them by the same, on every wallet, on every page, in every month. So a grade you screenshot today still means what it meant when you took it, and two wallets can be put side by side.

Nobody reaches either end. Across every wallet TailMyPicks has scored, the marks run from roughly 5 to 87 — which is what a fixed ruler costs, and what buys the sentence above.

It is not a win rate. A wallet can win four Picks in five and still grade below 50, if the market was already pricing those outcomes at 90c — it paid for the wins rather than finding them. The vs expected and Avg entry columns below are what separate the two.

The mark is deliberately pulled toward 50 when there is little evidence. Three lucky Picks do not produce a high grade; several hundred consistent ones do. So a modest grade on thousands of Picks means something a high grade on twelve does not.

Because it is shrunk this way, a Category grade is a conservative reading. The headline figure for a wallet is its best Category, so it always understates how badly the wallet does in its worst one — which is why the table below is per Category and not one blended number.

Record by Category

Ordered by how much this wallet actually traded in each Category, not by score — so the Categories it plays most appear first whether they went well or badly. Open any row to see the picks its numbers were computed from — all of them.

CategoryQualified picksWin ratevs expectedRealizable edgeAvg entryROI per pickTail Score
NFL Inactivelast resolved Jan 25, 2026, EST2138.1%8 W · 13 L-0.2wins-0.01per pick39cpaid+23.8%equal weight490.00 edge/pick
NFL — the 21 picks behind this row

Every qualified pick this wallet made in NFL, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Will the Denver Broncos win Super Bowl 2026?backed Yes · on Polymarket (opens in a new tab)8c$12Lost — open this pick on its own pageJan 25, 2026, EST-100%-$11.7
Patriots vs. Broncosbacked Broncos · on Polymarket (opens in a new tab)38c$259Lost — open this pick on its own pageJan 25, 2026, EST-100%-$259
Spread: Patriots (-3.5)backed Texans · on Polymarket (opens in a new tab)52c$127Lost — open this pick on its own pageJan 18, 2026, EST-100%-$127
Will the Buffalo Bills win Super Bowl 2026?backed Yes · on Polymarket (opens in a new tab)11c$103Lost — open this pick on its own pageJan 17, 2026, EST-100%-$103.22
Bills vs. Broncosbacked Bills · on Polymarket (opens in a new tab)40c$146Lost — open this pick on its own pageJan 17, 2026, EST-100%-$145.9
Texans vs. Steelers: O/U 36.5backed Over · on Polymarket (opens in a new tab)46c$15Lost — open this pick on its own pageJan 13, 2026, EST-100%-$14.69
Texans vs. Steelersbacked Steelers · on Polymarket (opens in a new tab)39c$38Lost — open this pick on its own pageJan 13, 2026, EST-100%-$37.61
49ers vs. Eagles: O/U 43.5backed Under · on Polymarket (opens in a new tab)48c$15Won — open this pick on its own pageJan 11, 2026, EST+108.3%+$16.25
Bills vs. Jaguarsbacked Bills · on Polymarket (opens in a new tab)47c$42Won — open this pick on its own pageJan 11, 2026, EST+112.5%+$47.64
Packers vs. Bearsbacked Bears · on Polymarket (opens in a new tab)9c$31Won — open this pick on its own pageJan 11, 2026, EST+996.2%+$309.94
Rams vs. Panthersbacked Panthers · on Polymarket (opens in a new tab)14c$76Lost — open this pick on its own pageJan 10, 2026, EST-100%-$75.78
Seahawks vs. 49ersbacked 49ers · on Polymarket (opens in a new tab)43c$37Lost — open this pick on its own pageJan 4, 2026, EST-100%-$36.51
Panthers vs. Buccaneersbacked Panthers · on Polymarket (opens in a new tab)39c$13Lost — open this pick on its own pageJan 3, 2026, EST-100%-$12.83
Rams vs. Falcons: O/U 48.5backed Under · on Polymarket (opens in a new tab)49c$15Lost — open this pick on its own pageDec 30, 2025, EST-100%-$15
Steelers vs. Brownsbacked Browns · on Polymarket (opens in a new tab)40c$25Won — open this pick on its own pageDec 28, 2025, EST+150.5%+$37.64
Spread: Eagles (-6.5)backed Eagles · on Polymarket (opens in a new tab)54c$15Won — open this pick on its own pageDec 20, 2025, EST+85.2%+$12.78
Dolphins vs. Steelers: O/U 41.5backed Under · on Polymarket (opens in a new tab)59c$15Lost — open this pick on its own pageDec 16, 2025, EST-100%-$15
Packers vs. Broncosbacked Broncos · on Polymarket (opens in a new tab)48c$20Won — open this pick on its own pageDec 14, 2025, EST+108.3%+$21.67
Bills vs. Patriotsbacked Bills · on Polymarket (opens in a new tab)42c$20Won — open this pick on its own pageDec 14, 2025, EST+138.1%+$27.62
Spread: Lions (-3.5)backed Lions · on Polymarket (opens in a new tab)50c$25Won — open this pick on its own pageDec 5, 2025, EST+100%+$25
Cowboys vs. Lions: O/U 54.5backed Under · on Polymarket (opens in a new tab)48c$31Lost — open this pick on its own pageDec 5, 2025, EST-100%-$30.71
All 21 picks, newest first.
College Football Inactivelast resolved Jan 20, 2026, EST1752.9%9 W · 8 L+1.1wins+0.07per pick46cpaid+8.1%equal weight53+0.03 edge/pick
College Football — the 17 picks behind this row

Every qualified pick this wallet made in College Football, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Spread: Indiana (-7.5)backed Miami · on Polymarket (opens in a new tab)53c$214Won — open this pick on its own pageJan 20, 2026, EST+88.7%+$189.77
Spread: Indiana (-8.5)backed Miami · on Polymarket (opens in a new tab)52c$18Won — open this pick on its own pageJan 20, 2026, EST+91.7%+$16.88
Will Ole Miss win the 2026 College Football National Championship?backed Yes · on Polymarket (opens in a new tab)13c$21Lost — open this pick on its own pageJan 9, 2026, EST-100%-$20.71
Miami vs. Ole Missbacked Ole Miss · on Polymarket (opens in a new tab)41c$69Lost — open this pick on its own pageJan 9, 2026, EST-100%-$68.96
Arizona vs. SMU Mustangsbacked SMU Mustangs · on Polymarket (opens in a new tab)54c$22Won — open this pick on its own pageJan 3, 2026, EST+84.4%+$18.91
Spread: Texas State (-14.5)backed Texas State · on Polymarket (opens in a new tab)51c$15Won — open this pick on its own pageJan 2, 2026, EST+96.2%+$14.43
Ole Miss vs. Georgiabacked Georgia · on Polymarket (opens in a new tab)61c$25Lost — open this pick on its own pageJan 2, 2026, EST-100%-$24.66
O/U 56.5backed Over · on Polymarket (opens in a new tab)46c$30Won — open this pick on its own pageJan 2, 2026, EST+116.2%+$34.79
Spread: Indiana (-7.5)backed Indiana · on Polymarket (opens in a new tab)50c$30Won — open this pick on its own pageJan 1, 2026, EST+100%+$30
Oregon vs. Texas Tech Red Raidersbacked Texas Tech Red Raiders · on Polymarket (opens in a new tab)46c$15Lost — open this pick on its own pageJan 1, 2026, EST-100%-$15
O/U 42.5backed Over · on Polymarket (opens in a new tab)44c$15Lost — open this pick on its own pageJan 1, 2026, EST-100%-$15
Michigan vs. Texasbacked Michigan · on Polymarket (opens in a new tab)40c$33Lost — open this pick on its own pageDec 31, 2025, EST-100%-$32.77
O/U 47.5backed Over · on Polymarket (opens in a new tab)47c$15Won — open this pick on its own pageDec 31, 2025, EST+112.8%+$17.08
USC vs. TCUbacked TCU · on Polymarket (opens in a new tab)40c$25Won — open this pick on its own pageDec 31, 2025, EST+151.5%+$37.87
Tennessee vs. Illinoisbacked Illinois · on Polymarket (opens in a new tab)51c$30Won — open this pick on its own pageDec 30, 2025, EST+96.5%+$28.94
O/U 51.5backed Over · on Polymarket (opens in a new tab)46c$24Lost — open this pick on its own pageDec 30, 2025, EST-100%-$23.83
North Texas vs. Tulanebacked North Texas · on Polymarket (opens in a new tab)53c$15Lost — open this pick on its own pageDec 6, 2025, EST-100%-$15
All 17 picks, newest first.
NBA Inactivelast resolved Jan 22, 2026, EST1225%3 W · 9 L-2.7wins-0.23per pick48cpaid-56.2%equal weight42-0.07 edge/pick
NBA — the 12 picks behind this row

Every qualified pick this wallet made in NBA, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Hawks vs. Grizzliesbacked Grizzlies · on Polymarket (opens in a new tab)37c$18Lost — open this pick on its own pageJan 22, 2026, EST-100%-$18
Hornets vs. Lakersbacked Lakers · on Polymarket (opens in a new tab)43c$27Lost — open this pick on its own pageJan 16, 2026, EST-100%-$27.03
Jazz vs. Mavericksbacked Mavericks · on Polymarket (opens in a new tab)60c$15Won — open this pick on its own pageJan 16, 2026, EST+66.7%+$9.75
Spread: Magic (-5.5)backed Magic · on Polymarket (opens in a new tab)52c$120Won — open this pick on its own pageJan 15, 2026, EST+92.3%+$110.77
Raptors vs. Pacersbacked Pacers · on Polymarket (opens in a new tab)34c$83Lost — open this pick on its own pageJan 14, 2026, EST-100%-$82.55
Mavericks vs. Kingsbacked Kings · on Polymarket (opens in a new tab)51c$14Lost — open this pick on its own pageJan 7, 2026, EST-100%-$13.64
Knicks vs. Pistonsbacked Knicks · on Polymarket (opens in a new tab)53c$111Lost — open this pick on its own pageJan 5, 2026, EST-100%-$111.5
Celtics vs. Clippersbacked Clippers · on Polymarket (opens in a new tab)53c$30Lost — open this pick on its own pageJan 4, 2026, EST-100%-$30
Timberwolves vs. Heatbacked Heat · on Polymarket (opens in a new tab)44c$23Lost — open this pick on its own pageJan 3, 2026, EST-100%-$23.21
Grizzlies vs. Lakersbacked Grizzlies · on Polymarket (opens in a new tab)43c$15Lost — open this pick on its own pageJan 3, 2026, EST-100%-$15
Nets vs. Wizardsbacked Wizards · on Polymarket (opens in a new tab)60c$14Won — open this pick on its own pageJan 2, 2026, EST+66.7%+$9
Pistons vs. Lakersbacked Lakers · on Polymarket (opens in a new tab)44c$15Lost — open this pick on its own pageDec 31, 2025, EST-100%-$15
All 12 picks, newest first.
Premier League Inactivelast resolved Jan 24, 2026, EST742.9%3 W · 4 L+0.4wins+0.06per pick37cpaid+14.1%equal weight51+0.01 edge/pick
Premier League — the 7 picks behind this row

Every qualified pick this wallet made in Premier League, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

NHL Inactivelast resolved Jan 21, 2026, EST425%1 W · 3 L-1.2wins-0.31per pick56cpaid-49.6%equal weight45-0.04 edge/pick
NHL — the 4 picks behind this row

Every qualified pick this wallet made in NHL, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Senators vs. Blue Jacketsbacked Blue Jackets · on Polymarket (opens in a new tab)49c$13Lost — open this pick on its own pageJan 21, 2026, EST-100%-$13
Panthers vs. Sabresbacked Sabres · on Polymarket (opens in a new tab)53c$16Lost — open this pick on its own pageJan 12, 2026, EST-100%-$15.78
Utah vs. Rangersbacked Rangers · on Polymarket (opens in a new tab)72c$23Lost — open this pick on its own pageJan 6, 2026, EST-100%-$23
Penguins vs. Lightningbacked Penguins · on Polymarket (opens in a new tab)50c$25Won — open this pick on its own pageDec 4, 2025, EST+101.7%+$25.43
All 4 picks, newest first.
Australian A League Inactivelast resolved Jan 16, 2026, EST333.3%1 W · 2 L0.0wins-0.01per pick34cpaid-7.4%equal weight500.00 edge/pick
Australian A League — the 3 picks behind this row

Every qualified pick this wallet made in Australian A League, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

South American Leagues Inactivelast resolved Jan 23, 2026, EST333.3%1 W · 2 L0.0wins-0.01per pick34cpaid-16.4%equal weight500.00 edge/pick
South American Leagues — the 3 picks behind this row

Every qualified pick this wallet made in South American Leagues, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

Ncaa Basketball Inactivelast resolved Jan 21, 2026, EST2100%2 W · 0 L+1.0wins+0.52per pick48cpaid+109.9%equal weight54+0.04 edge/pick
Ncaa Basketball — the 2 picks behind this row

Every qualified pick this wallet made in Ncaa Basketball, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Murray State Racers vs. Drake Bulldogsbacked Drake Bulldogs · on Polymarket (opens in a new tab)51c$19Won — open this pick on its own pageJan 21, 2026, EST+97.8%+$18.6
Boise State Broncos vs. UNLV Runnin' Rebelsbacked UNLV Runnin' Rebels · on Polymarket (opens in a new tab)45c$11Won — open this pick on its own pageJan 14, 2026, EST+121.9%+$13.64
All 2 picks, newest first.
Token Launches Inactivelast resolved Jan 2, 2026, EST250%1 W · 1 L0.0wins-0.01per pick51cpaid-27.6%equal weight500.00 edge/pick
Token Launches — the 2 picks behind this row

Every qualified pick this wallet made in Token Launches, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Lighter market cap (FDV) >$1B one day after launch?backed Yes · on Polymarket (opens in a new tab)69c$23Won — open this pick on its own pageJan 2, 2026, EST+44.8%+$10.51
Lighter Airdrop on December 29?backed Yes · on Polymarket (opens in a new tab)33c$44Lost — open this pick on its own pageDec 30, 2025, EST-100%-$44.45
All 2 picks, newest first.
Middle East Inactivelast resolved Feb 1, 2026, EST20%0 W · 2 L-0.5wins-0.27per pick27cpaid-100%equal weight48-0.02 edge/pick
Middle East — the 2 picks behind this row

Every qualified pick this wallet made in Middle East, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Israel strikes Iran by January 31, 2026?backed Yes · on Polymarket (opens in a new tab)33c$32Lost — open this pick on its own pageFeb 1, 2026, EST-100%-$31.78
Khamenei out as Supreme Leader of Iran by January 31?backed Yes · on Polymarket (opens in a new tab)21c$23Lost — open this pick on its own pageFeb 1, 2026, EST-100%-$22.53
All 2 picks, newest first.
Asian League Inactivelast resolved Jan 12, 2026, EST1100%1 W · 0 L+0.6wins+0.60per pick40cpaid+152%equal weight53+0.02 edge/pick
Asian League — the 1 pick behind this row

Every qualified pick this wallet made in Asian League, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Will Al Hilal Saudi Club win on 2026-01-12?backed Yes · on Polymarket (opens in a new tab)40c$13Won — open this pick on its own pageJan 12, 2026, EST+152%+$19.96
All 1 picks, newest first.
Tweets Inactivelast resolved Jan 20, 2026, EST1100%1 W · 0 L+0.5wins+0.46per pick54cpaid+85.2%equal weight52+0.02 edge/pick
Tweets — the 1 pick behind this row

Every qualified pick this wallet made in Tweets, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Will Elon Musk post 520-539 tweets from January 13 to January 20, 2026?backed Yes · on Polymarket (opens in a new tab)54c$11Won — open this pick on its own pageJan 20, 2026, EST+85.2%+$9.39
All 1 picks, newest first.
CS2 Inactivelast resolved Dec 5, 2025, EST1100%1 W · 0 L+0.4wins+0.40per pick60cpaid+65.3%equal weight52+0.02 edge/pick
CS2 — the 1 pick behind this row

Every qualified pick this wallet made in CS2, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Counter-Strike: MOUZ vs Spirit (BO3)backed Spirit · on Polymarket (opens in a new tab)60c$20Won — open this pick on its own pageDec 5, 2025, EST+65.3%+$13.06
All 1 picks, newest first.
Other European Leagues Inactivelast resolved Jan 11, 2026, EST1100%1 W · 0 L+0.4wins+0.38per pick62cpaid+61%equal weight52+0.01 edge/pick
Other European Leagues — the 1 pick behind this row

Every qualified pick this wallet made in Other European Leagues, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
Will Heart of Midlothian FC win on 2026-01-11?backed Yes · on Polymarket (opens in a new tab)62c$14Won — open this pick on its own pageJan 11, 2026, EST+61%+$8.54
All 1 picks, newest first.
Champions League Inactivelast resolved Dec 9, 2025, EST10%0 W · 1 L-0.7wins-0.68per pick68cpaid-100%equal weight47-0.03 edge/pick
Champions League — the 1 pick behind this row

Every qualified pick this wallet made in Champions League, newest first — these are the picks the row above was computed from, not a sample of them. P/L held is what each pick would have been worth held to resolution, not cash this wallet withdrew. Days are shown in US/Eastern, the zone Polymarket writes its markets in. A market name opens TailMyPicks’s own post-mortem of that market — who else was on it, and what they paid — and a result opens that one pick on a page of its own, which is the link to send somebody.

MarketEntrySizeResultResolvedReturnP/L held
FC Barcelona vs. Eintracht Frankfurt: O/U 3.5backed Over · on Polymarket (opens in a new tab)68c$14Lost — open this pick on its own pageDec 9, 2025, EST-100%-$14.16
All 1 picks, newest first.

vs expected is how many more (or fewer) Picks this wallet won than the prices it paid implied it would. It is the column that tells a real edge apart from a record bought by backing favourites. Realizable edge is what that comes to per Pick for somebody copying the wallet, after the cost of getting in behind it. Avg entry is the average price it paid, so a strong record built on heavy favourites shows as one. ROI per pick counts every Pick equally rather than by size, which is how a record earned across many Picks is told apart from one carried by a few large ones. Days are shown in US/Eastern, the zone Polymarket writes its markets in — an American night game settles after midnight UTC, so any other zone would name the day after the one it was played on. Inactive means nothing has resolved in that Category recently. The score is kept and the wallet stays reachable here; it only leaves the default leaderboard.

Not every trade counts. A Pick has to clear four thresholds to be scored.

TailMyPicks scores a wallet on what it can actually be judged on: positions held to resolution, in markets with enough volume to be real, at prices where being right was not already priced in.

  • The market traded at least $500.
  • The entry price was between 0.00 and 0.80 — a near-certainty is not a call.
  • The position was at least $10 — dust is not a position.
  • The market has resolved, so there is a right answer to grade against.

Thresholds behind these numbers: set by an operator decision, not measured.