Tennis · resolved market
Santiago: Pedro Sakamoto vs Henrique Rocha
https://tailmypicks.com/m/0x1d3166732b787ec79f8c0d4317ae071c7ff17a75e32e0887808cbaf77d5c74ac
Rebuilt .
What this market resolved to
- Winning outcome
- Henrique Rochaof Pedro Sakamoto, Henrique Rocha
- Resolved
- US/Eastern, the zone Polymarket writes its markets in
- Scored in
- Tennisevery record on this page is that Category’s
- Volume Polymarket published
- Polymarket published no figure
- Volume TailMyPicks’s own read summed
- $43,185
Both are shown because TailMyPicks only trusts a market it can reconcile: it reads every trade itself and compares its own total against the venue’s before scoring anything. The threshold below was applied to $43,185 — TailMyPicks’s own total, because the venue published none.
Every figure here describes what TailMyPicks scored — positions held to resolution in markets that cleared the thresholds below. It is not a Polymarket account balance, and open positions are not counted anywhere on this site.
Who was on this market
All 76 wallets that hold a qualified pick on this market, biggest position first. Ordered by position size rather than by score, because this is a post-mortem of one market — a strong wallet’s small pick does not belong above a large committed one. Each wallet’s record in Tennis is on its own row, so one correct call here is not mistaken for a track record.
| On this market | This wallet’s whole record in Tennis | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Wallet | Entry | Position | Result | P/L held | Qualified picks | Win rate | vs expected | Realizable edge | Avg entry | ROI per pick | Tail Score |
| 0xa1a9…e22ebacked Pedro Sakamoto | 24c | 3,610$854 in | Lost — open this pick on its own page | -$853.91 | 1,284 | 39.2%503 W · 781 L | -12.2wins | -0.01per pick | 40cpaid | -3.8%equal weight | 49-0.01 edge/pick |
| 0x4ffe…9f71backed Pedro Sakamoto | 0c | 3,362$12 in | Lost — open this pick on its own page | -$12.29 | 2,331 | 7.9%183 W · 2,148 L | -56.9wins | -0.02per pick | 10cpaid | -60.4%equal weight | 47-0.02 edge/pick |
| 0xd6a3…9489backed Pedro Sakamoto | 14c | 2,207$316 in | Lost — open this pick on its own page | -$316.21 | 2,746 | 30.8%846 W · 1,900 L | -67.1wins | -0.02per pick | 33cpaid | -36.1%equal weight | 47-0.02 edge/pick |
| 0xddd3…dba6backed Henrique Rocha | 76c | 1,518$1,153 in | Won — open this pick on its own page | +$364.24 | 83 | 43.4%36 W · 47 L | +0.5wins | +0.01per pick | 43cpaid | +4.1%equal weight | 500.00 edge/pick |
| 0xc0f2…a822backed Henrique Rocha | 78c | 1,203$938 in | Won — open this pick on its own page | +$265.23 | 111 | 58.6%65 W · 46 L | -2.7wins | -0.02per pick | 61cpaid | -5.3%equal weight | 48-0.02 edge/pick |
| 0xbb9f…557bbacked Pedro Sakamoto | 26c | 1,191$311 in | Lost — open this pick on its own page | -$311.1 | 301 | 31.9%96 W · 205 L | -9.5wins | -0.03per pick | 35cpaid | -5.8%equal weight | 47-0.03 edge/pick |
| 0x6814…a9e7backed Pedro Sakamoto | 16c | 1,129$177 in | Lost — open this pick on its own page | -$176.53 | 3,072 | 44.9%1,378 W · 1,694 L | -30.9wins | -0.01per pick | 46cpaid | -23%equal weight | 49-0.01 edge/pick |
| 0x2ffb…e82abacked Pedro Sakamoto | 19c | 1,068$200 in | Lost — open this pick on its own page | -$200 | 440 | 38.4%169 W · 271 L | -27.2wins | -0.06per pick | 45cpaid | -29%equal weight | 44-0.06 edge/pick |
| 0x6ac5…4b6ebacked Pedro Sakamoto | 26c | 1,054$272 in | Lost — open this pick on its own page | -$271.62 | 1,809 | 43.8%793 W · 1,016 L | -2.2wins | 0.00per pick | 44cpaid | -1.8%equal weight | 500.00 edge/pick |
| 0xcd3d…e7ebbacked Pedro Sakamoto | 5c | 943.4$50 in | Lost — open this pick on its own page | -$50 | 1,130 | 27.9%315 W · 815 L | +1.6wins | 0.00per pick | 28cpaid | -11.8%equal weight | 500.00 edge/pick |
| 0x8483…671cbacked Henrique Rocha | 73c | 797.56$580 in | Won — open this pick on its own page | +$217.85 | 2 | 100%2 W · 0 L | +0.7wins | +0.35per pick | 65cpaid | +55%equal weight | 53+0.03 edge/pick |
| 0xd038…8f51backed Pedro Sakamoto | 31c | 635.8$194 in | Lost — open this pick on its own page | -$193.96 | 4,288 | 40.5%1,737 W · 2,551 L | -139.3wins | -0.03per pick | 44cpaid | -20.5%equal weight | 46-0.03 edge/pick |
| 0x97a0…da35backed Henrique Rocha | 67c | 627.68$420 in | Won — open this pick on its own page | +$207.68 | 479 | 46.3%222 W · 257 L | +9.2wins | +0.02per pick | 44cpaid | -4.6%equal weight | 52+0.02 edge/pick |
| 0x051b…09d4backed Pedro Sakamoto | 26c | 535.21$140 in | Lost — open this pick on its own page | -$140 | 678 | 36%244 W · 434 L | +8.7wins | +0.01per pick | 35cpaid | +0.6%equal weight | 51+0.01 edge/pick |
| 0xa446…d9c6backed Henrique Rocha | 74c | 500.26$369 in | Won — open this pick on its own page | +$130.99 | 153 | 54.2%83 W · 70 L | -4.2wins | -0.03per pick | 57cpaid | -1%equal weight | 47-0.02 edge/pick |
| 0x9869…1a45backed Henrique Rocha | 80c | 487.5$390 in | Won — open this pick on its own page | +$97.5 | 101 | 56.4%57 W · 44 L | -1.2wins | -0.01per pick | 58cpaid | -3.5%equal weight | 49-0.01 edge/pick |
| 0xd5a1…0544backed Henrique Rocha | 72c | 472$340 in | Won — open this pick on its own page | +$132.16 | 317 | 53.6%170 W · 147 L | +17.4wins | +0.05per pick | 48cpaid | +13.4%equal weight | 56+0.05 edge/pick |
| 0xee61…debfbacked Pedro Sakamoto | 10c | 414.66$42 in | Lost — open this pick on its own page | -$42.22 | 2,865 | 44.3%1,269 W · 1,596 L | +6.0wins | 0.00per pick | 44cpaid | -20.8%equal weight | 500.00 edge/pick |
| 0xee4c…8572backed Pedro Sakamoto | 15c | 409$61 in | Lost — open this pick on its own page | -$60.55 | 234 | 29.1%68 W · 166 L | -6.8wins | -0.03per pick | 32cpaid | -4.5%equal weight | 47-0.03 edge/pick |
| 0xc470…c792backed Pedro Sakamoto | 33c | 384.65$128 in | Lost — open this pick on its own page | -$127.85 | 1,504 | 35.1%528 W · 976 L | +12.5wins | +0.01per pick | 34cpaid | +0.7%equal weight | 51+0.01 edge/pick |
| 0xd37a…2358backed Pedro Sakamoto | 18c | 372.15$68 in | Lost — open this pick on its own page | -$68.39 | 1,973 | 46.3%914 W · 1,059 L | 0.0wins | 0.00per pick | 46cpaid | -2.9%equal weight | 500.00 edge/pick |
| 0x9e31…5e8ebacked Henrique Rocha | 72c | 369.16$267 in | Won — open this pick on its own page | +$101.98 | 134 | 50.7%68 W · 66 L | -6.8wins | -0.05per pick | 56cpaid | -10.8%equal weight | 45-0.04 edge/pick |
| 0xf02f…1ed8backed Pedro Sakamoto | 27c | 348.14$94 in | Lost — open this pick on its own page | -$93.82 | 1,444 | 38%548 W · 896 L | -46.0wins | -0.03per pick | 41cpaid | -16.4%equal weight | 47-0.03 edge/pick |
| 0x20ba…6c27backed Henrique Rocha | 76c | 328.94$250 in | Won — open this pick on its own page | +$78.94 | 1,186 | 62.8%745 W · 441 L | -16.1wins | -0.01per pick | 64cpaid | -3.6%equal weight | 49-0.01 edge/pick |
| 0x2b72…f4d3backed Henrique Rocha | 72c | 328.65$238 in | Won — open this pick on its own page | +$90.65 | 4 | 50%2 W · 2 L | -0.7wins | -0.17per pick | 67cpaid | -31.7%equal weight | 47-0.02 edge/pick |
| 0x10ff…ff77backed Henrique Rocha | 79c | 290$229 in | Won — open this pick on its own page | +$60.9 | 967 | 55.3%535 W · 432 L | +3.4wins | 0.00per pick | 55cpaid | -1.3%equal weight | 500.00 edge/pick |
| 0xd88a…1eefbacked Pedro Sakamoto | 17c | 263$45 in | Lost — open this pick on its own page | -$45.29 | 544 | 34.2%186 W · 358 L | -2.8wins | -0.01per pick | 35cpaid | -2.5%equal weight | 490.00 edge/pick |
| 0x7646…b2a1backed Pedro Sakamoto | 7c | 250$18 in | Lost — open this pick on its own page | -$17.5 | 99 | 38.4%38 W · 61 L | +3.1wins | +0.03per pick | 35cpaid | -2.2%equal weight | 53+0.02 edge/pick |
| 0xfb87…a45dbacked Henrique Rocha | 60c | 245$147 in | Won — open this pick on its own page | +$98 | 8 | 37.5%3 W · 5 L | -0.8wins | -0.10per pick | 48cpaid | -31.7%equal weight | 47-0.03 edge/pick |
| 0x1ae5…f4cabacked Henrique Rocha | 45c | 222.22$100 in | Won — open this pick on its own page | +$122.22 | 58 | 24.1%14 W · 44 L | -2.9wins | -0.05per pick | 29cpaid | -31.5%equal weight | 46-0.03 edge/pick |
| 0xe062…61fdbacked Henrique Rocha | 73c | 206.78$150 in | Won — open this pick on its own page | +$56.78 | 106 | 49.1%52 W · 54 L | +1.2wins | +0.01per pick | 48cpaid | +1%equal weight | 51+0.01 edge/pick |
| 0x1dd2…9e07backed Henrique Rocha | 73c | 205.48$150 in | Won — open this pick on its own page | +$55.48 | 2,418 | 51.7%1,249 W · 1,169 L | +10.3wins | 0.00per pick | 51cpaid | +0.9%equal weight | 500.00 edge/pick |
| 0xddf5…aaa3backed Pedro Sakamoto | 31c | 193.99$60 in | Lost — open this pick on its own page | -$60 | 692 | 53.3%369 W · 323 L | -10.4wins | -0.02per pick | 55cpaid | -2.8%equal weight | 48-0.01 edge/pick |
| 0x093a…1b3fbacked Henrique Rocha | 77c | 189.26$146 in | Won — open this pick on its own page | +$43.26 | 275 | 66.5%183 W · 92 L | +7.3wins | +0.03per pick | 64cpaid | +1.7%equal weight | 53+0.02 edge/pick |
| 0x64e8…7819backed Pedro Sakamoto | 28c | 150$42 in | Lost — open this pick on its own page | -$42 | 1,882 | 35.5%669 W · 1,213 L | +26.8wins | +0.01per pick | 34cpaid | +4.8%equal weight | 52+0.01 edge/pick |
| 0xa07d…a037backed Pedro Sakamoto | 21c | 143.88$31 in | Lost — open this pick on its own page | -$30.54 | 3,270 | 13.8%450 W · 2,820 L | -549.1wins | -0.17per pick | 31cpaid | -57.4%equal weight | 31-0.17 edge/pick |
| 0xdb69…c3e5backed Henrique Rocha | 69c | 140$97 in | Won — open this pick on its own page | +$43.4 | 1,076 | 55.5%597 W · 479 L | +8.5wins | +0.01per pick | 55cpaid | +0.6%equal weight | 51+0.01 edge/pick |
| 0x3078…0389backed Pedro Sakamoto | 25c | 138.68$35 in | Lost — open this pick on its own page | -$35.29 | 1,245 | 33.9%422 W · 823 L | -5.6wins | 0.00per pick | 34cpaid | -3.4%equal weight | 500.00 edge/pick |
| 0x204f…5e14backed Pedro Sakamoto | 35c | 132.01$46 in | Lost — open this pick on its own page | -$46.36 | 8,217 | 45.5%3,737 W · 4,480 L | +166.6wins | +0.02per pick | 43cpaid | -16.3%equal weight | 52+0.02 edge/pick |
| 0x46ff…6672backed Pedro Sakamoto | 18c | 122.17$22 in | Lost — open this pick on its own page | -$22 | 155 | 12.9%20 W · 135 L | -1.7wins | -0.01per pick | 14cpaid | +4%equal weight | 49-0.01 edge/pick |
| 0xff34…694bbacked Henrique Rocha | 74c | 116.41$86 in | Won — open this pick on its own page | +$30.75 | 2,761 | 53.9%1,487 W · 1,274 L | +73.8wins | +0.03per pick | 51cpaid | +0.4%equal weight | 53+0.03 edge/pick |
| 0x5271…0f95backed Pedro Sakamoto | 20c | 116$23 in | Lost — open this pick on its own page | -$23.32 | 108 | 35.2%38 W · 70 L | -3.8wins | -0.03per pick | 39cpaid | -18%equal weight | 47-0.03 edge/pick |
| 0x94bb…77eebacked Pedro Sakamoto | 18c | 113.63$20 in | Lost — open this pick on its own page | -$20 | 819 | 33.1%271 W · 548 L | -30.1wins | -0.04per pick | 37cpaid | -21.7%equal weight | 46-0.04 edge/pick |
| 0x6f19…b9ffbacked Henrique Rocha | 73c | 110.27$80 in | Won — open this pick on its own page | +$29.77 | 145 | 40.7%59 W · 86 L | +3.4wins | +0.02per pick | 38cpaid | -0.7%equal weight | 52+0.02 edge/pick |
| 0xb171…7d2bbacked Henrique Rocha | 73c | 109.26$80 in | Won — open this pick on its own page | +$29.5 | 326 | 49.1%160 W · 166 L | -18.4wins | -0.06per pick | 55cpaid | -10.6%equal weight | 44-0.05 edge/pick |
| 0xe496…4d8bbacked Pedro Sakamoto | 17c | 100.24$17 in | Lost — open this pick on its own page | -$17.33 | 182 | 33.5%61 W · 121 L | -2.9wins | -0.02per pick | 35cpaid | -5%equal weight | 48-0.01 edge/pick |
| 0x4fab…708bbacked Henrique Rocha | 53c | 100.2$53 in | Won — open this pick on its own page | +$47.2 | 1,276 | 30.4%388 W · 888 L | -11.5wins | -0.01per pick | 31cpaid | -6.6%equal weight | 49-0.01 edge/pick |
| 0x2f31…e2b6backed Henrique Rocha | 71c | 100$71 in | Won — open this pick on its own page | +$29 | 355 | 59.4%211 W · 144 L | -10.8wins | -0.03per pick | 62cpaid | -8.1%equal weight | 47-0.03 edge/pick |
| 0x1683…6906backed Henrique Rocha | 76c | 90$68 in | Won — open this pick on its own page | +$21.75 | 56 | 58.9%33 W · 23 L | +2.7wins | +0.05per pick | 54cpaid | +20.7%equal weight | 54+0.03 edge/pick |
| 0xf0b0…8cabbacked Pedro Sakamoto | 21c | 87.89$18 in | Lost — open this pick on its own page | -$18.36 | 381 | 47%179 W · 202 L | +9.6wins | +0.03per pick | 44cpaid | -10.2%equal weight | 53+0.02 edge/pick |
| 0x0c99…0c88backed Pedro Sakamoto | 34c | 81.03$28 in | Lost — open this pick on its own page | -$27.82 | 9,286 | 44.3%4,110 W · 5,176 L | -245.7wins | -0.03per pick | 47cpaid | -12.1%equal weight | 47-0.03 edge/pick |
| 0xf026…8df7backed Pedro Sakamoto | 22c | 75$16 in | Lost — open this pick on its own page | -$16.44 | 373 | 42.6%159 W · 214 L | -9.9wins | -0.03per pick | 45cpaid | -18.2%equal weight | 47-0.02 edge/pick |
| 0x200f…7a96backed Henrique Rocha | 75c | 75$56 in | Won — open this pick on its own page | +$18.61 | 7,139 | 49.7%3,548 W · 3,591 L | +109.9wins | +0.02per pick | 48cpaid | +3.3%equal weight | 52+0.02 edge/pick |
| 0xbfd7…f0bfbacked Pedro Sakamoto | 30c | 70.06$21 in | Lost — open this pick on its own page | -$21.11 | 7,816 | 50.6%3,958 W · 3,858 L | +95.4wins | +0.01per pick | 49cpaid | -4.6%equal weight | 51+0.01 edge/pick |
| 0x31e5…e2a2backed Henrique Rocha | 53c | 70$37 in | Won — open this pick on its own page | +$32.7 | 197 | 62.9%124 W · 73 L | +0.7wins | 0.00per pick | 63cpaid | -2%equal weight | 500.00 edge/pick |
| 0x151f…b606backed Henrique Rocha | 73c | 68.49$50 in | Won — open this pick on its own page | +$18.49 | 4 | 75%3 W · 1 L | +0.2wins | +0.06per pick | 69cpaid | +11.9%equal weight | 51+0.01 edge/pick |
| 0xc895…21f5backed Henrique Rocha | 78c | 61.78$48 in | Won — open this pick on its own page | +$13.78 | 7 | 71.4%5 W · 2 L | +1.5wins | +0.22per pick | 49cpaid | +53.5%equal weight | 55+0.05 edge/pick |
| 0xe0f6…a5eebacked Henrique Rocha | 76c | 56$43 in | Won — open this pick on its own page | +$13.44 | 599 | 54.9%329 W · 270 L | +10.9wins | +0.02per pick | 53cpaid | +1.9%equal weight | 52+0.02 edge/pick |
| 0x1d94…9100backed Pedro Sakamoto | 40c | 55.55$22 in | Lost — open this pick on its own page | -$22.22 | 1,265 | 29.2%370 W · 895 L | -13.3wins | -0.01per pick | 30cpaid | -14.8%equal weight | 49-0.01 edge/pick |
| 0xe2e1…c20abacked Pedro Sakamoto | 25c | 53$13 in | Lost — open this pick on its own page | -$13.15 | 737 | 45.2%333 W · 404 L | -9.4wins | -0.01per pick | 46cpaid | -17.8%equal weight | 49-0.01 edge/pick |
| 0x191f…4381backed Henrique Rocha | 73c | 52.08$38 in | Won — open this pick on its own page | +$14.08 | 1 | 100%1 W · 0 L | +0.3wins | +0.27per pick | 73cpaid | +37.1%equal weight | 51+0.01 edge/pick |
| 0x489d…f6e3backed Pedro Sakamoto | 31c | 50$16 in | Lost — open this pick on its own page | -$15.5 | 1,831 | 53%971 W · 860 L | -45.3wins | -0.02per pick | 56cpaid | -7.6%equal weight | 47-0.02 edge/pick |
| 0x1039…2914backed Henrique Rocha | 72c | 48$35 in | Won — open this pick on its own page | +$13.44 | 287 | 64.1%184 W · 103 L | +0.2wins | 0.00per pick | 64cpaid | -1%equal weight | 500.00 edge/pick |
| 0xc59f…f632backed Henrique Rocha | 77c | 45.46$35 in | Won — open this pick on its own page | +$10.45 | 83 | 61.4%51 W · 32 L | +2.6wins | +0.03per pick | 58cpaid | +4.8%equal weight | 53+0.02 edge/pick |
| 0x2294…4cd3backed Pedro Sakamoto | 29c | 44.5$13 in | Lost — open this pick on its own page | -$12.91 | 147 | 44.2%65 W · 82 L | +1.0wins | +0.01per pick | 44cpaid | -11.3%equal weight | 51+0.01 edge/pick |
| 0xdb5e…e0f7backed Henrique Rocha | 54c | 44$24 in | Won — open this pick on its own page | +$20.24 | 275 | 52%143 W · 132 L | -1.4wins | -0.01per pick | 53cpaid | -0.8%equal weight | 490.00 edge/pick |
| 0x320f…1420backed Henrique Rocha | 73c | 42.95$31 in | Won — open this pick on its own page | +$11.46 | 222 | 58.1%129 W · 93 L | +2.8wins | +0.01per pick | 57cpaid | +6.3%equal weight | 51+0.01 edge/pick |
| 0x8027…cf81backed Henrique Rocha | 73c | 40.83$30 in | Won — open this pick on its own page | +$10.83 | 308 | 53.6%165 W · 143 L | +2.9wins | +0.01per pick | 53cpaid | +0.8%equal weight | 51+0.01 edge/pick |
| 0xa4ba…c5d8backed Henrique Rocha | 79c | 38$30 in | Won — open this pick on its own page | +$7.98 | 602 | 40.5%244 W · 358 L | -12.2wins | -0.02per pick | 43cpaid | -5.3%equal weight | 48-0.02 edge/pick |
| 0x1e3b…e232backed Pedro Sakamoto | 30c | 36$11 in | Lost — open this pick on its own page | -$10.92 | 3,901 | 50.1%1,953 W · 1,948 L | -13.2wins | 0.00per pick | 50cpaid | -2.2%equal weight | 500.00 edge/pick |
| 0xe761…4f54backed Henrique Rocha | 59c | 35.53$21 in | Won — open this pick on its own page | +$14.43 | 263 | 49.4%130 W · 133 L | -2.5wins | -0.01per pick | 50cpaid | -8.9%equal weight | 49-0.01 edge/pick |
| 0x8f60…a419backed Henrique Rocha | 73c | 28.98$21 in | Won — open this pick on its own page | +$7.82 | 23 | 60.9%14 W · 9 L | +0.8wins | +0.04per pick | 57cpaid | -11%equal weight | 52+0.02 edge/pick |
| 0xdf58…711fbacked Henrique Rocha | 65c | 24.98$16 in | Won — open this pick on its own page | +$8.74 | 131 | 57.3%75 W · 56 L | +7.5wins | +0.06per pick | 52cpaid | +14.2%equal weight | 55+0.05 edge/pick |
| 0x277c…e529backed Henrique Rocha | 73c | 20.55$15 in | Won — open this pick on its own page | +$5.55 | 54 | 46.3%25 W · 29 L | -0.5wins | -0.01per pick | 47cpaid | -4.7%equal weight | 49-0.01 edge/pick |
| 0x9620…5052backed Henrique Rocha | 59c | 17$10 in | Won — open this pick on its own page | +$6.97 | 95 | 62.1%59 W · 36 L | +7.7wins | +0.08per pick | 54cpaid | +12.6%equal weight | 57+0.06 edge/pick |
| 0x9ef1…5acabacked Henrique Rocha | 79c | 14$11 in | Won — open this pick on its own page | +$2.94 | 1,794 | 60.2%1,080 W · 714 L | +6.8wins | 0.00per pick | 60cpaid | +1.8%equal weight | 500.00 edge/pick |
Entry is the average price this wallet paid on the side it backed, so being right at 20c is distinguishable from being right at 95c. Position is what it was left holding in shares, with what it spent underneath. Result opens that one pick on a page of its own, which is the link to send somebody. P/L held is what that position would have been worth held to resolution — not cash the wallet withdrew, because selling early is still a correct forecast. The seven columns on the right describe the wallet’s whole record in Tennis and say nothing about this market.
The rest of this event
Polymarket sells these questions together. 5 in all. TailMyPicks has no name for an event — the venue publishes an identifier and no title — so they are listed by their own questions.
- Santiago: Pedro Sakamoto vs Henrique Rochathis page
- Pedro Sakamoto vs. Henrique Rocha: Total Sets O/U 2.5Over 2.5 won
- Sakamoto vs. Rocha: Match O/U 21.5Over won
- Sakamoto vs. Rocha: Match O/U 22.5Over won
- Sakamoto vs. Rocha: Match O/U 23.5Over won
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.