TailMyPicks

Check any Polymarket wallet’s real record.

Tennis · resolved market

Wimbledon: Sinner vs. Dimitrov

Rebuilt .

What this market resolved to

Winning outcome
Sinner of Sinner , Dimitrov
Resolved
US/Eastern, the zone Polymarket writes its markets in
Scored in
Tennisevery record on this page is that Category’s
Volume Polymarket published
$760,522
Volume TailMyPicks’s own read summed
$792,538

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 $760,522 the venue’s figure.

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

The 100 largest positions, of 254 wallets holding a qualified pick here — biggest first. This page details 100 at most, and the number beside it is the real one. 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 marketThis wallet’s whole record in Tennis
WalletEntryPositionResultP/L heldQualified picksWin ratevs expectedRealizable edgeAvg entryROI per pickTail Score
0x61bf…647ebacked Dimitrov 26c134,408$34,511 inLost — open this pick on its own page-$34,510.93185.6%1 W · 17 L-3.6wins-0.20per pick25cpaid-89.1%equal weight41-0.08 edge/pick
0x8e0b…9e5cbacked Dimitrov 6c55,035$3,325 inLost — open this pick on its own page-$3,324.9713934.5%48 W · 91 L+4.7wins+0.03per pick31cpaid+14.5%equal weight53+0.03 edge/pick
0xb083…b3f0backed Dimitrov 50c43,902$22,047 inLost — open this pick on its own page-$22,046.812317.4%4 W · 19 L-3.9wins-0.17per pick34cpaid-63.8%equal weight41-0.08 edge/pick
0xf520…0637backed Sinner 63c39,280$24,917 inWon — open this pick on its own page+$14,363.0828043.2%121 W · 159 L+4.5wins+0.02per pick42cpaid-17.9%equal weight52+0.01 edge/pick
0xf22e…f52cbacked Dimitrov 6c20,994$1,199 inLost — open this pick on its own page-$1,199.055525.5%14 W · 41 L-3.8wins-0.07per pick32cpaid-44.5%equal weight45-0.05 edge/pick
0x5aca…8b98backed Dimitrov 30c20,569$6,094 inLost — open this pick on its own page-$6,093.7820%0 W · 2 L-0.8wins-0.42per pick42cpaid-100%equal weight47-0.03 edge/pick
0x7d60…03d8backed Dimitrov 41c17,658$7,229 inLost — open this pick on its own page-$7,228.941414.3%2 W · 12 L-2.1wins-0.15per pick29cpaid-47.3%equal weight44-0.05 edge/pick
0xecb1…5da3backed Sinner 66c16,514$10,977 inWon — open this pick on its own page+$5,537.775545.5%25 W · 30 L-1.8wins-0.03per pick49cpaid-17.5%equal weight48-0.02 edge/pick
0x1fdc…3ad2backed Dimitrov 10c15,532$1,597 inLost — open this pick on its own page-$1,597.243641.7%15 W · 21 L-0.5wins-0.01per pick43cpaid-33.6%equal weight49-0.01 edge/pick
0x6f6c…40adbacked Sinner 55c14,990$8,242 inWon — open this pick on its own page+$6,748.471070%7 W · 3 L+2.5wins+0.25per pick45cpaid+38.6%equal weight58+0.07 edge/pick
0x37e4…c991backed Sinner 47c10,657$4,990 inWon — open this pick on its own page+$5,667.1422037.7%83 W · 137 L+1.1wins0.00per pick37cpaid+0.1%equal weight500.00 edge/pick
0x9419…4201backed Dimitrov 2c10,356$157 inLost — open this pick on its own page-$156.712924.1%7 W · 22 L-0.3wins-0.01per pick25cpaid-44.6%equal weight490.00 edge/pick
0x4a6f…6b82backed Sinner 80c9,450$7,550 inWon — open this pick on its own page+$1,899.44744.7%21 W · 26 L-3.1wins-0.07per pick51cpaid-19.5%equal weight45-0.04 edge/pick
0x76c8…ba09backed Dimitrov 26c9,081$2,353 inLost — open this pick on its own page-$2,352.612751.9%14 W · 13 L+0.3wins+0.01per pick51cpaid+41.1%equal weight51+0.01 edge/pick
0x9fa9…2491backed Dimitrov 33c9,038$2,951 inLost — open this pick on its own page-$2,951.4132141.1%132 W · 189 L-1.1wins0.00per pick41cpaid-19.9%equal weight500.00 edge/pick
0x28f0…ceabbacked Dimitrov 2c8,839$160 inLost — open this pick on its own page-$159.754639.1%18 W · 28 L-0.4wins-0.01per pick40cpaid-15.3%equal weight49-0.01 edge/pick
0x1388…339abacked Dimitrov 5c8,625$436 inLost — open this pick on its own page-$436.0122737.4%85 W · 142 L+2.8wins+0.01per pick36cpaid-9.8%equal weight51+0.01 edge/pick
0xee03…3eeabacked Dimitrov 34c8,190$2,765 inLost — open this pick on its own page-$2,764.942152.4%11 W · 10 L+2.2wins+0.11per pick42cpaid+15%equal weight55+0.05 edge/pick
0xb786…b18dbacked Dimitrov 48c7,789$3,739 inLost — open this pick on its own page-$3,738.5339144.2%173 W · 218 L-4.7wins-0.01per pick45cpaid-6.7%equal weight49-0.01 edge/pick
0x588d…099abacked Dimitrov 6c7,585$487 inLost — open this pick on its own page-$486.5112737%47 W · 80 L-2.3wins-0.02per pick39cpaid-32%equal weight48-0.02 edge/pick
0x6cff…c3dabacked Sinner 66c6,795$4,484 inWon — open this pick on its own page+$2,311.45822.4%13 W · 45 L-1.3wins-0.02per pick25cpaid-59.3%equal weight48-0.02 edge/pick
0xbb58…86a4backed Dimitrov 4c5,731$229 inLost — open this pick on its own page-$229.256147.5%29 W · 32 L+4.7wins+0.08per pick40cpaid+14.9%equal weight56+0.05 edge/pick
0x9a15…68abbacked Dimitrov 5c5,573$302 inLost — open this pick on its own page-$302.15333.3%1 W · 2 L-0.4wins-0.12per pick46cpaid-51.8%equal weight49-0.01 edge/pick
0x5976…91f9backed Dimitrov 7c5,455$365 inLost — open this pick on its own page-$364.571921.1%4 W · 15 L+0.3wins+0.02per pick19cpaid-11.3%equal weight51+0.01 edge/pick
0x3a5f…ce01backed Sinner 64c5,329$3,427 inWon — open this pick on its own page+$1,902.111060%6 W · 4 L+0.1wins+0.01per pick59cpaid-6.9%equal weight500.00 edge/pick
0xa49b…4c40backed Dimitrov 23c5,263$1,200 inLost — open this pick on its own page-$1,200.4411230.4%34 W · 78 L-4.4wins-0.04per pick34cpaid-30.9%equal weight46-0.03 edge/pick
0xeda0…7dffbacked Dimitrov 5c5,044$271 inLost — open this pick on its own page-$270.6632031.3%100 W · 220 L-9.9wins-0.03per pick34cpaid-15.8%equal weight47-0.03 edge/pick
0xc9c8…44fbbacked Dimitrov 30c4,904$1,453 inLost — open this pick on its own page-$1,452.779826.5%26 W · 72 L-6.8wins-0.07per pick33cpaid-33%equal weight44-0.06 edge/pick
0x6c54…da75backed Sinner 48c4,889$2,339 inWon — open this pick on its own page+$2,5504955.1%27 W · 22 L-1.3wins-0.03per pick58cpaid-7.3%equal weight48-0.02 edge/pick
0x0a26…1851backed Dimitrov 49c4,500$2,192 inLost — open this pick on its own page-$2,191.560053.8%323 W · 277 L-8.4wins-0.01per pick55cpaid-8.4%equal weight49-0.01 edge/pick
0xa264…e26abacked Sinner 64c4,349$2,777 inWon — open this pick on its own page+$1,572.383638.9%14 W · 22 L-2.4wins-0.07per pick46cpaid-29.7%equal weight46-0.04 edge/pick
0x8fd9…544abacked Dimitrov 49c4,083$2,000 inLost — open this pick on its own page-$2,00020155.7%112 W · 89 L-3.9wins-0.02per pick58cpaid-5.2%equal weight48-0.02 edge/pick
0xad94…85b1backed Dimitrov 24c3,760$885 inLost — open this pick on its own page-$885.4412231.1%38 W · 84 L+0.9wins+0.01per pick30cpaid+12.7%equal weight51+0.01 edge/pick
0xb113…8bc6backed Dimitrov 27c3,522$958 inLost — open this pick on its own page-$957.922344.8%100 W · 123 L-13.0wins-0.06per pick51cpaid-15.1%equal weight44-0.05 edge/pick
0x76fc…e0bdbacked Sinner 52c3,325$1,715 inWon — open this pick on its own page+$1,609.844030%12 W · 28 L-1.9wins-0.05per pick35cpaid-34.7%equal weight47-0.03 edge/pick
0x2831…c51cbacked Sinner 66c3,198$2,100 inWon — open this pick on its own page+$1,098.36540%2 W · 3 L+0.8wins+0.16per pick24cpaid-0.6%equal weight53+0.03 edge/pick
0x9f41…a496backed Dimitrov 5c3,000$135 inLost — open this pick on its own page-$1354940.8%20 W · 29 L-0.7wins-0.01per pick42cpaid-27%equal weight49-0.01 edge/pick
0x48b0…083ebacked Sinner 51c2,948$1,498 inWon — open this pick on its own page+$1,449.72333.3%1 W · 2 L-0.1wins-0.04per pick37cpaid-34.4%equal weight500.00 edge/pick
0x76dc…17b4backed Dimitrov 13c2,913$379 inLost — open this pick on its own page-$378.543435.3%12 W · 22 L+1.1wins+0.03per pick32cpaid-20.8%equal weight52+0.02 edge/pick
0x4e78…52b5backed Dimitrov 52c2,910$1,500 inLost — open this pick on its own page-$1,499.679348.4%45 W · 48 L-4.1wins-0.04per pick53cpaid-21.8%equal weight46-0.03 edge/pick
0x1484…cafebacked Dimitrov 4c2,860$117 inLost — open this pick on its own page-$117.254548.9%22 W · 23 L+2.7wins+0.06per pick43cpaid+11.5%equal weight54+0.04 edge/pick
0x7bb4…acb6backed Dimitrov 44c2,828$1,244 inLost — open this pick on its own page-$1,244.197356.2%41 W · 32 L-3.8wins-0.05per pick61cpaid-8.8%equal weight46-0.04 edge/pick
0x574e…3ef1backed Sinner 55c2,711$1,492 inWon — open this pick on its own page+$1,219.722445.8%11 W · 13 L-0.4wins-0.02per pick48cpaid-19%equal weight49-0.01 edge/pick
0xb45d…a406backed Dimitrov 44c2,700$1,178 inLost — open this pick on its own page-$1,177.961464.3%9 W · 5 L+0.7wins+0.05per pick59cpaid-10.5%equal weight52+0.02 edge/pick
0x8e2f…578fbacked Dimitrov 52c2,688$1,408 inLost — open this pick on its own page-$1,408.17850%4 W · 4 L-0.1wins-0.01per pick51cpaid+2.7%equal weight500.00 edge/pick
0xdd8e…f023backed Dimitrov 12c2,680$321 inLost — open this pick on its own page-$32157249.5%283 W · 289 L-32.8wins-0.06per pick55cpaid-13.9%equal weight44-0.05 edge/pick
0x2e67…91b0backed Sinner 48c2,500$1,205 inWon — open this pick on its own page+$1,2952821.4%6 W · 22 L-2.6wins-0.09per pick31cpaid-29.9%equal weight45-0.05 edge/pick
0x339a…1eaebacked Sinner 54c2,500$1,358 inWon — open this pick on its own page+$1,142.18348.2%40 W · 43 L+9.4wins+0.11per pick37cpaid+27.4%equal weight60+0.09 edge/pick
0xe31a…adffbacked Dimitrov 16c2,436$385 inLost — open this pick on its own page-$38525244.4%112 W · 140 L+2.0wins+0.01per pick44cpaid-8.9%equal weight51+0.01 edge/pick
0xe87a…6d01backed Sinner 61c2,379$1,456 inWon — open this pick on its own page+$923.362450%12 W · 12 L+2.6wins+0.11per pick39cpaid+27.4%equal weight56+0.05 edge/pick
0xb6b9…95fabacked Sinner 50c2,250$1,125 inWon — open this pick on its own page+$1,124.52933.3%3 W · 6 L-0.3wins-0.03per pick36cpaid-23.3%equal weight49-0.01 edge/pick
0x3cc4…f94fbacked Dimitrov 23c2,184$500 inLost — open this pick on its own page-$500450%2 W · 2 L-0.1wins-0.02per pick52cpaid-24.2%equal weight500.00 edge/pick
0x497f…fe58backed Dimitrov 51c2,065$1,053 inLost — open this pick on its own page-$1,052.78250%1 W · 1 L-0.2wins-0.08per pick58cpaid-22.6%equal weight49-0.01 edge/pick
0x23b9…4267backed Dimitrov 16c2,008$318 inLost — open this pick on its own page-$3184450%22 W · 22 L+2.5wins+0.06per pick44cpaid-16.6%equal weight54+0.04 edge/pick
0xc3ec…e987backed Sinner 61c1,962$1,206 inWon — open this pick on its own page+$755.9728543.5%124 W · 161 L+5.3wins+0.02per pick42cpaid+3.3%equal weight52+0.02 edge/pick
0x8b7e…6a9fbacked Dimitrov 5c1,895$100 inLost — open this pick on its own page-$10048043.3%208 W · 272 L-1.0wins0.00per pick44cpaid+0.6%equal weight500.00 edge/pick
0x7d5c…0182backed Sinner 53c1,830$969 inWon — open this pick on its own page+$860.57933.3%3 W · 6 L-0.7wins-0.07per pick41cpaid-43%equal weight48-0.02 edge/pick
0xdc4b…5a92backed Dimitrov 5c1,818$100 inLost — open this pick on its own page-$10063942.4%271 W · 368 L+1.3wins0.00per pick42cpaid-2%equal weight500.00 edge/pick
0xbd02…60e0backed Sinner 73c1,720$1,249 inWon — open this pick on its own page+$471.034845.8%22 W · 26 L+4.3wins+0.09per pick37cpaid-1.3%equal weight56+0.06 edge/pick
0xf901…2264backed Sinner 65c1,671$1,092 inWon — open this pick on its own page+$578.14850%4 W · 4 L+0.8wins+0.10per pick40cpaid-7.5%equal weight53+0.03 edge/pick
0x2873…ad0abacked Sinner 55c1,612$885 inWon — open this pick on its own page+$727.191457.1%8 W · 6 L+0.8wins+0.06per pick51cpaid-1.9%equal weight52+0.02 edge/pick
0x9e19…95dabacked Dimitrov 19c1,582$306 inLost — open this pick on its own page-$305.68633.3%2 W · 4 L-0.3wins-0.05per pick38cpaid-38.1%equal weight49-0.01 edge/pick
0x6f64…32b3backed Dimitrov 37c1,500$549 inLost — open this pick on its own page-$549.3633.3%2 W · 4 L-0.8wins-0.13per pick47cpaid-37.3%equal weight47-0.03 edge/pick
0x702b…d274backed Dimitrov 44c1,488$651 inLost — open this pick on its own page-$650.71435.7%5 W · 9 L0.0wins0.00per pick36cpaid-18.5%equal weight500.00 edge/pick
0x4b5a…7618backed Dimitrov 15c1,464$215 inLost — open this pick on its own page-$215.0625330%76 W · 177 L+4.1wins+0.02per pick28cpaid-5.2%equal weight52+0.01 edge/pick
0xc1be…d6a2backed Sinner 66c1,447$956 inWon — open this pick on its own page+$491.71475%3 W · 1 L+0.8wins+0.19per pick56cpaid+21.4%equal weight53+0.03 edge/pick
0x89f2…0659backed Sinner 53c1,400$742 inWon — open this pick on its own page+$657.993447.1%16 W · 18 L+3.5wins+0.10per pick37cpaid+27.7%equal weight57+0.06 edge/pick
0x3210…5c4ebacked Dimitrov 50c1,380$688 inLost — open this pick on its own page-$688.232133.3%7 W · 14 L-1.8wins-0.09per pick42cpaid-44.7%equal weight46-0.04 edge/pick
0x6332…6128backed Dimitrov 35c1,359$472 inLost — open this pick on its own page-$471.710839.8%43 W · 65 L+2.2wins+0.02per pick38cpaid+5.8%equal weight52+0.02 edge/pick
0x5327…3b80backed Sinner 74c1,317$974 inWon — open this pick on its own page+$342.3812038.3%46 W · 74 L-2.6wins-0.02per pick40cpaid-0.2%equal weight48-0.02 edge/pick
0xa113…93f4backed Dimitrov 32c1,263$405 inLost — open this pick on its own page-$405250%1 W · 1 L0.0wins-0.01per pick51cpaid-27.5%equal weight500.00 edge/pick
0x38a0…16e9backed Dimitrov 1c1,193$12 inLost — open this pick on its own page-$121822.2%4 W · 14 L+0.9wins+0.05per pick17cpaid+74.8%equal weight52+0.02 edge/pick
0x3ef0…657ebacked Dimitrov 30c1,141$337 inLost — open this pick on its own page-$3371127.3%3 W · 8 L-0.9wins-0.08per pick35cpaid-46.9%equal weight47-0.02 edge/pick
0x6c82…6150backed Dimitrov 26c1,139$297 inLost — open this pick on its own page-$296.6631650%158 W · 158 L-6.5wins-0.02per pick52cpaid-2.4%equal weight48-0.02 edge/pick
0x481b…74c1backed Sinner 55c1,116$610 inWon — open this pick on its own page+$505.499130.8%28 W · 63 L-2.9wins-0.03per pick34cpaid-29.5%equal weight47-0.03 edge/pick
0x9a75…4347backed Sinner 47c1,106$522 inWon — open this pick on its own page+$583.892347.8%11 W · 12 L+0.4wins+0.02per pick46cpaid-9.8%equal weight51+0.01 edge/pick
0x9dd9…08bdbacked Dimitrov 30c1,095$328 inLost — open this pick on its own page-$328.051,85244.5%825 W · 1,027 L-20.3wins-0.01per pick46cpaid-18.8%equal weight49-0.01 edge/pick
0xe65f…a749backed Sinner 61c1,091$669 inWon — open this pick on its own page+$421.843638.9%14 W · 22 L+0.5wins+0.01per pick38cpaid-13.8%equal weight51+0.01 edge/pick
0xdf86…601fbacked Sinner 55c1,083$600 inWon — open this pick on its own page+$483.0910134.7%35 W · 66 L-6.1wins-0.06per pick41cpaid-17.6%equal weight45-0.05 edge/pick
0x96df…4caabacked Sinner 49c1,022$500 inWon — open this pick on its own page+$522.4926039.2%102 W · 158 L+3.0wins+0.01per pick38cpaid-1.6%equal weight51+0.01 edge/pick
0x3ab6…cfecbacked Dimitrov 14c1,022$145 inLost — open this pick on its own page-$14512927.1%35 W · 94 L+1.7wins+0.01per pick26cpaid-24.3%equal weight51+0.01 edge/pick
0x5b62…6137backed Dimitrov 52c1,020$532 inLost — open this pick on its own page-$531.71656.3%9 W · 7 L+2.0wins+0.13per pick44cpaid+10.6%equal weight56+0.05 edge/pick
0x3013…e5b2backed Sinner 51c1,003$514 inWon — open this pick on its own page+$489.5340144.4%178 W · 223 L+14.7wins+0.04per pick41cpaid+4.5%equal weight54+0.03 edge/pick
0xebaa…94e5backed Dimitrov 3c1,000$30 inLost — open this pick on its own page-$30933.3%3 W · 6 L+1.0wins+0.11per pick22cpaid+36.5%equal weight53+0.03 edge/pick
0x1a5f…cbbfbacked Dimitrov 43c1,000$431 inLost — open this pick on its own page-$431812.5%1 W · 7 L-2.2wins-0.27per pick40cpaid-83.5%equal weight43-0.07 edge/pick
0xcdeb…1a50backed Dimitrov 52c1,000$519 inLost — open this pick on its own page-$51930%0 W · 3 L-1.4wins-0.48per pick48cpaid-100%equal weight44-0.05 edge/pick
0x700f…62d8backed Sinner 60c991.74$600 inWon — open this pick on its own page+$391.7438348%184 W · 199 L+7.7wins+0.02per pick46cpaid+2.5%equal weight52+0.02 edge/pick
0x4df3…788fbacked Dimitrov 5c980.59$47 inLost — open this pick on its own page-$47.3495140.1%381 W · 570 L+29.7wins+0.03per pick37cpaid+12%equal weight53+0.03 edge/pick
0x16ea…6df7backed Sinner 53c866.63$455 inWon — open this pick on its own page+$411.417521.3%16 W · 59 L-9.7wins-0.13per pick34cpaid-62.4%equal weight39-0.10 edge/pick
0x0e98…0ab2backed Dimitrov 30c832.23$251 inLost — open this pick on its own page-$251.11728.6%2 W · 5 L-0.2wins-0.02per pick31cpaid-51.5%equal weight49-0.01 edge/pick
0x9e5c…d8e6backed Dimitrov 36c823.08$295 inLost — open this pick on its own page-$295.41,09035.9%391 W · 699 L+16.2wins+0.01per pick34cpaid-6.3%equal weight52+0.01 edge/pick
0x6e35…c89abacked Dimitrov 41c800$331 inLost — open this pick on its own page-$330.681729.4%5 W · 12 L+0.6wins+0.04per pick26cpaid-34.7%equal weight52+0.01 edge/pick
0xb478…ac0abacked Dimitrov 20c791$160 inLost — open this pick on its own page-$16036047.2%170 W · 190 L+9.6wins+0.03per pick45cpaid-1.9%equal weight53+0.02 edge/pick
0xaacf…5f84backed Sinner 78c780$607 inWon — open this pick on its own page+$172.8817867.4%120 W · 58 L+3.6wins+0.02per pick65cpaid+3.5%equal weight52+0.02 edge/pick
0x366c…6578backed Sinner 62c762.34$475 inWon — open this pick on its own page+$286.863265.6%21 W · 11 L+4.0wins+0.13per pick53cpaid+36.3%equal weight58+0.07 edge/pick
0x9262…4978backed Sinner 61c753.68$463 inWon — open this pick on its own page+$290.31258.3%7 W · 5 L+0.3wins+0.03per pick56cpaid-0.8%equal weight51+0.01 edge/pick
0x6203…d744backed Dimitrov 5c736.36$40 inLost — open this pick on its own page-$401513.3%2 W · 13 L0.0wins0.00per pick13cpaid-72.1%equal weight500.00 edge/pick
0x7358…4e7ebacked Sinner 73c735.39$539 inWon — open this pick on its own page+$196.72771.4%5 W · 2 L+1.4wins+0.20per pick51cpaid+28.9%equal weight55+0.04 edge/pick
0xf848…f554backed Sinner 65c629.38$411 inWon — open this pick on its own page+$218.56757.1%4 W · 3 L+0.3wins+0.04per pick53cpaid-18.5%equal weight51+0.01 edge/pick
0x35e8…dde4backed Dimitrov 48c625$300 inLost — open this pick on its own page-$3003441.2%14 W · 20 L+0.4wins+0.01per pick40cpaid-8.6%equal weight51+0.01 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.

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.