TailMyPicks

Check any Polymarket wallet’s real record.

Tennis · resolved market

Australian Open Women's: Coco Gauff vs Elina Svitolina

Rebuilt .

What this market resolved to

Winning outcome
Svitolinaof Gauff, Svitolina
Resolved
US/Eastern, the zone Polymarket writes its markets in
Scored in
Tennisevery record on this page is that Category’s
Volume Polymarket published
$903,945
Volume TailMyPicks’s own read summed
$1,010,027

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 $903,945 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 367 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
0x68dd…f0b2backed Gauff63c80,000$50,400 inLost — open this pick on its own page-$50,4006552.3%34 W · 31 L+0.2wins0.00per pick52cpaid-7.1%equal weight500.00 edge/pick
0x5877…d894backed Svitolina37c60,000$22,200 inWon — open this pick on its own page+$37,799.9811633.6%39 W · 77 L-7.1wins-0.06per pick40cpaid-14.2%equal weight44-0.05 edge/pick
0xe60a…6a47backed Svitolina37c55,336$20,533 inWon — open this pick on its own page+$34,802.8825428%71 W · 183 L-13.4wins-0.05per pick33cpaid-24.6%equal weight45-0.05 edge/pick
0x2727…eef4backed Svitolina37c49,787$18,470 inWon — open this pick on its own page+$31,316.5919134%65 W · 126 L+6.4wins+0.03per pick31cpaid+3.9%equal weight53+0.03 edge/pick
0x3b5c…126ebacked Gauff13c30,978$4,174 inLost — open this pick on its own page-$4,173.9580938.8%314 W · 495 L+5.4wins+0.01per pick38cpaid-23.1%equal weight51+0.01 edge/pick
0xd289…079fbacked Gauff52c28,376$14,885 inLost — open this pick on its own page-$14,885.422568%17 W · 8 L+2.7wins+0.11per pick57cpaid+8%equal weight56+0.05 edge/pick
0x1433…56a0backed Gauff64c26,065$16,700 inLost — open this pick on its own page-$16,700.0210541%43 W · 62 L-1.9wins-0.02per pick43cpaid-0.7%equal weight48-0.01 edge/pick
0x4e9b…945abacked Gauff65c25,000$16,250 inLost — open this pick on its own page-$16,249.9210%0 W · 1 L-0.7wins-0.65per pick65cpaid-100%equal weight47-0.03 edge/pick
0xcf6c…7e66backed Gauff64c20,772$13,294 inLost — open this pick on its own page-$13,294.391,19348.9%583 W · 610 L+9.9wins+0.01per pick48cpaid-1.5%equal weight51+0.01 edge/pick
0x103f…83f7backed Gauff0c20,000$20 inLost — open this pick on its own page-$2010%0 W · 1 L0.0wins0.00per pick0cpaid-100%equal weight500.00 edge/pick
0x8e0b…9e5cbacked Svitolina36c19,969$7,189 inWon — open this pick on its own page+$12,780.3613934.5%48 W · 91 L+4.7wins+0.03per pick31cpaid+14.5%equal weight53+0.03 edge/pick
0x67e7…52cabacked Gauff64c19,030$12,179 inLost — open this pick on its own page-$12,179728.6%2 W · 5 L-0.8wins-0.11per pick40cpaid-35.4%equal weight47-0.02 edge/pick
0xd6a3…9489backed Svitolina47c16,808$7,928 inWon — open this pick on its own page+$8,879.942,74630.8%846 W · 1,900 L-67.1wins-0.02per pick33cpaid-36.1%equal weight47-0.02 edge/pick
0x5e6e…be00backed Svitolina36c15,888$5,733 inWon — open this pick on its own page+$10,155.242356.5%13 W · 10 L+3.2wins+0.14per pick43cpaid+35.1%equal weight57+0.07 edge/pick
0xead0…f3babacked Gauff63c15,000$9,450 inLost — open this pick on its own page-$9,450742.9%3 W · 4 L0.0wins0.00per pick43cpaid-11.2%equal weight500.00 edge/pick
0xb552…94a8backed Svitolina35c13,352$4,673 inWon — open this pick on its own page+$8,678.821338.5%82 W · 131 L+5.4wins+0.03per pick36cpaid+15.5%equal weight53+0.02 edge/pick
0x5375…aeeabacked Gauff57c12,338$7,045 inLost — open this pick on its own page-$7,04545737.9%173 W · 284 L-9.6wins-0.02per pick40cpaid-28.2%equal weight48-0.02 edge/pick
0x42c1…e644backed Gauff64c10,566$6,762 inLost — open this pick on its own page-$6,762.014266.7%28 W · 14 L+1.7wins+0.04per pick63cpaid+5.3%equal weight53+0.03 edge/pick
0x44a1…bd21backed Gauff4c10,000$400 inLost — open this pick on its own page-$40023731.6%75 W · 162 L+3.3wins+0.01per pick30cpaid+12.9%equal weight51+0.01 edge/pick
0x410a…2643backed Gauff0c10,000$10 inLost — open this pick on its own page-$1040%0 W · 4 L-1.6wins-0.39per pick39cpaid-100%equal weight44-0.05 edge/pick
0x204f…5e14backed Gauff50c9,943$4,967 inLost — open this pick on its own page-$4,966.558,21745.5%3,737 W · 4,480 L+166.6wins+0.02per pick43cpaid-16.3%equal weight52+0.02 edge/pick
0xf5e1…5ad0backed Gauff63c9,436$5,930 inLost — open this pick on its own page-$5,930.245955.9%33 W · 26 L+4.9wins+0.08per pick48cpaid+31.8%equal weight57+0.06 edge/pick
0x681d…3fa1backed Gauff5c8,868$443 inLost — open this pick on its own page-$443.381618.8%3 W · 13 L+0.8wins+0.05per pick14cpaid-63.3%equal weight52+0.02 edge/pick
0x160b…4296backed Svitolina36c8,711$3,096 inWon — open this pick on its own page+$5,614.881,65849.9%828 W · 830 L+7.9wins0.00per pick49cpaid+0.3%equal weight510.00 edge/pick
0xd568…a35abacked Svitolina37c8,030$3,000 inWon — open this pick on its own page+$5,030.474560%27 W · 18 L+4.1wins+0.09per pick51cpaid+21.5%equal weight57+0.06 edge/pick
0x336b…1233backed Gauff64c8,000$5,120 inLost — open this pick on its own page-$5,12057939.7%230 W · 349 L-0.5wins0.00per pick40cpaid-5.4%equal weight500.00 edge/pick
0x6f3e…bcf8backed Gauff64c7,893$5,052 inLost — open this pick on its own page-$5,051.5376146.6%355 W · 406 L-1.0wins0.00per pick47cpaid-1.3%equal weight500.00 edge/pick
0x067f…e041backed Gauff63c7,500$4,725 inLost — open this pick on its own page-$4,72517823%41 W · 137 L-8.6wins-0.05per pick28cpaid-43.2%equal weight45-0.04 edge/pick
0x91fd…1cdebacked Gauff63c7,500$4,725 inLost — open this pick on its own page-$4,724.991822.2%4 W · 14 L-2.1wins-0.11per pick34cpaid-50.3%equal weight45-0.05 edge/pick
0xa82a…a759backed Gauff63c7,403$4,664 inLost — open this pick on its own page-$4,663.9333955.2%187 W · 152 L+18.2wins+0.05per pick50cpaid+12.1%equal weight56+0.05 edge/pick
0x972b…78babacked Gauff34c7,198$2,443 inLost — open this pick on its own page-$2,442.622,98239.1%1,167 W · 1,815 L-109.1wins-0.04per pick43cpaid-30.2%equal weight46-0.04 edge/pick
0xc6b6…13acbacked Gauff66c7,077$4,637 inLost — open this pick on its own page-$4,636.582360.9%14 W · 9 L+2.7wins+0.12per pick49cpaid+24.3%equal weight56+0.06 edge/pick
0x3257…2f3bbacked Svitolina52c6,979$3,657 inWon — open this pick on its own page+$3,322.3844360%266 W · 177 L+2.4wins+0.01per pick59cpaid-1.6%equal weight51+0.01 edge/pick
0xc459…7b3fbacked Svitolina38c6,653$2,528 inWon — open this pick on its own page+$4,124.631100%1 W · 0 L+0.6wins+0.62per pick38cpaid+163.2%equal weight53+0.02 edge/pick
0x9dea…3792backed Svitolina38c5,263$2,000 inWon — open this pick on its own page+$3,263.1636968%251 W · 118 L-1.1wins0.00per pick68cpaid-1.7%equal weight500.00 edge/pick
0x9fad…5a9fbacked Svitolina36c5,000$1,800 inWon — open this pick on its own page+$3,20016825%42 W · 126 L-14.2wins-0.08per pick33cpaid-39.3%equal weight42-0.07 edge/pick
0x15fe…86bebacked Gauff62c5,000$3,120 inLost — open this pick on its own page-$3,119.985444.4%24 W · 30 L-1.8wins-0.03per pick48cpaid-22.5%equal weight47-0.02 edge/pick
0xb3ac…5018backed Gauff64c4,688$3,000 inLost — open this pick on its own page-$3,00020844.2%92 W · 116 L-3.9wins-0.02per pick46cpaid-0.1%equal weight48-0.02 edge/pick
0x6c03…d894backed Svitolina35c4,629$1,620 inWon — open this pick on its own page+$3,008.853246.9%15 W · 17 L+1.2wins+0.04per pick43cpaid+40%equal weight52+0.02 edge/pick
0x9fa9…c100backed Svitolina35c4,457$1,555 inWon — open this pick on its own page+$2,902.0643051.2%220 W · 210 L+5.2wins+0.01per pick50cpaid+2.1%equal weight51+0.01 edge/pick
0x11e2…26ccbacked Svitolina35c4,393$1,538 inWon — open this pick on its own page+$2,855.453537.1%13 W · 22 L-1.5wins-0.04per pick42cpaid-22.1%equal weight47-0.03 edge/pick
0x583f…2dabbacked Gauff23c4,356$1,001 inLost — open this pick on its own page-$1,000.673336.4%12 W · 21 L-0.7wins-0.02per pick38cpaid-4.5%equal weight49-0.01 edge/pick
0x046c…2a9cbacked Gauff65c4,312$2,803 inLost — open this pick on its own page-$2,80335247.2%166 W · 186 L-23.2wins-0.07per pick54cpaid-16.5%equal weight43-0.06 edge/pick
0xde7d…499ebacked Svitolina58c4,309$2,506 inWon — open this pick on its own page+$1,802.5827132.1%87 W · 184 L+8.5wins+0.03per pick29cpaid0%equal weight53+0.03 edge/pick
0xf38b…b601backed Svitolina36c4,167$1,500 inWon — open this pick on its own page+$2,666.675036%18 W · 32 L-0.2wins0.00per pick36cpaid-7.6%equal weight500.00 edge/pick
0x9d94…017dbacked Svitolina41c3,912$1,598 inWon — open this pick on its own page+$2,313.692,06834.9%721 W · 1,347 L-44.2wins-0.02per pick37cpaid-25.6%equal weight48-0.02 edge/pick
0xe786…b716backed Gauff63c3,213$2,024 inLost — open this pick on its own page-$2,023.969264.1%59 W · 33 L+4.0wins+0.04per pick60cpaid+5%equal weight54+0.03 edge/pick
0x6b7c…5f83backed Gauff37c3,130$1,171 inLost — open this pick on its own page-$1,170.932,42647.3%1,148 W · 1,278 L+45.2wins+0.02per pick45cpaid-13.4%equal weight52+0.02 edge/pick
0xa8ca…d535backed Gauff64c3,125$2,000 inLost — open this pick on its own page-$2,0004673.9%34 W · 12 L+3.2wins+0.07per pick67cpaid+11.9%equal weight55+0.04 edge/pick
0xed2c…9597backed Svitolina37c3,000$1,110 inWon — open this pick on its own page+$1,8901526.7%4 W · 11 L-2.1wins-0.14per pick40cpaid-48.4%equal weight44-0.05 edge/pick
0xa2e4…bf9dbacked Svitolina44c2,999$1,320 inWon — open this pick on its own page+$1,679.4418047.2%85 W · 95 L0.0wins0.00per pick47cpaid-5.5%equal weight500.00 edge/pick
0x250e…e864backed Gauff64c2,868$1,834 inLost — open this pick on its own page-$1,834.47771.4%5 W · 2 L+1.5wins+0.22per pick50cpaid+35.4%equal weight55+0.05 edge/pick
0x2930…4cf8backed Gauff27c2,867$772 inLost — open this pick on its own page-$771.7312631%39 W · 87 L-0.5wins0.00per pick31cpaid-6.8%equal weight500.00 edge/pick
0x9f13…e0fdbacked Svitolina36c2,822$1,016 inWon — open this pick on its own page+$1,806.0476140.6%309 W · 452 L-15.3wins-0.02per pick43cpaid-6.4%equal weight48-0.02 edge/pick
0x8f58…6f3cbacked Gauff64c2,740$1,758 inLost — open this pick on its own page-$1,757.81241.7%5 W · 7 L-0.2wins-0.01per pick43cpaid+38.4%equal weight500.00 edge/pick
0x0a7e…fce4backed Svitolina35c2,558$884 inWon — open this pick on its own page+$1,674.5222344.8%100 W · 123 L+13.0wins+0.06per pick39cpaid+10.3%equal weight56+0.05 edge/pick
0x9731…9b35backed Svitolina37c2,500$925 inWon — open this pick on its own page+$1,574.9824846%114 W · 134 L-6.5wins-0.03per pick49cpaid-8.8%equal weight47-0.02 edge/pick
0x7972…594fbacked Gauff50c2,400$1,200 inLost — open this pick on its own page-$1,20013260.6%80 W · 52 L-3.9wins-0.03per pick64cpaid-4.9%equal weight47-0.03 edge/pick
0x7daf…0ec8backed Gauff64c2,367$1,516 inLost — open this pick on its own page-$1,515.7910043%43 W · 57 L+3.0wins+0.03per pick40cpaid+12.5%equal weight53+0.02 edge/pick
0x2005…75eabacked Gauff30c2,220$655 inLost — open this pick on its own page-$655.0611,43543.4%4,959 W · 6,476 L+17.8wins0.00per pick43cpaid-20.1%equal weight500.00 edge/pick
0xe7a2…ae70backed Gauff65c2,170$1,411 inLost — open this pick on its own page-$1,410.515952.2%83 W · 76 L+1.6wins+0.01per pick51cpaid+2.2%equal weight51+0.01 edge/pick
0x033e…1bb9backed Svitolina50c2,126$1,053 inWon — open this pick on its own page+$1,072.7830645.1%138 W · 168 L-11.2wins-0.04per pick49cpaid-10.3%equal weight46-0.03 edge/pick
0x78bc…2585backed Svitolina40c2,070$823 inWon — open this pick on its own page+$1,246.731145.5%5 W · 6 L+0.8wins+0.07per pick38cpaid+25.4%equal weight52+0.02 edge/pick
0xb722…914ebacked Gauff54c2,050$1,115 inLost — open this pick on its own page-$1,114.5633.3%2 W · 4 L-0.2wins-0.03per pick36cpaid-29%equal weight49-0.01 edge/pick
0xf9fe…366bbacked Svitolina35c2,000$700 inWon — open this pick on its own page+$1,3005429.6%16 W · 38 L-1.0wins-0.02per pick32cpaid-6.6%equal weight49-0.01 edge/pick
0x5d76…9168backed Svitolina36c2,000$720 inWon — open this pick on its own page+$1,279.9637540.8%153 W · 222 L-5.5wins-0.01per pick42cpaid-0.2%equal weight48-0.01 edge/pick
0x01e0…732cbacked Gauff10c1,978$205 inLost — open this pick on its own page-$205.1230%0 W · 3 L-0.2wins-0.08per pick8cpaid-100%equal weight49-0.01 edge/pick
0x4411…985ebacked Gauff47c1,974$930 inLost — open this pick on its own page-$930.332,14554.2%1,162 W · 983 L-1.6wins0.00per pick54cpaid-2.2%equal weight500.00 edge/pick
0x46f1…7295backed Svitolina63c1,822$1,147 inWon — open this pick on its own page+$674.7418663.4%118 W · 68 L+3.9wins+0.02per pick61cpaid+2.8%equal weight52+0.02 edge/pick
0x45d9…a89abacked Gauff32c1,818$582 inLost — open this pick on its own page-$581.711123.4%26 W · 85 L-8.2wins-0.07per pick31cpaid-28.6%equal weight43-0.06 edge/pick
0x7ca1…aea0backed Svitolina36c1,670$601 inWon — open this pick on its own page+$1,068.81,16137.6%437 W · 724 L-27.8wins-0.02per pick40cpaid-7.1%equal weight47-0.02 edge/pick
0x1bb3…b7febacked Svitolina37c1,623$600 inWon — open this pick on its own page+$1,022.81666.7%4 W · 2 L+1.4wins+0.24per pick43cpaid+30.4%equal weight55+0.05 edge/pick
0x5d9e…e0e3backed Gauff13c1,615$217 inLost — open this pick on its own page-$2171,92355.4%1,066 W · 857 L-44.9wins-0.02per pick58cpaid-9.8%equal weight47-0.02 edge/pick
0x1e33…afb3backed Gauff63c1,587$1,000 inLost — open this pick on its own page-$1,00062061.9%384 W · 236 L-18.7wins-0.03per pick65cpaid-3.7%equal weight47-0.03 edge/pick
0x9d8a…5201backed Svitolina37c1,566$580 inWon — open this pick on its own page+$986.821,42128.6%407 W · 1,014 L+4.5wins0.00per pick28cpaid-8.8%equal weight500.00 edge/pick
0xe443…d22abacked Gauff65c1,502$976 inLost — open this pick on its own page-$976.310%0 W · 1 L-0.7wins-0.65per pick65cpaid-100%equal weight47-0.03 edge/pick
0x2ef5…39edbacked Svitolina36c1,472$530 inWon — open this pick on its own page+$942.0425722.2%57 W · 200 L-12.3wins-0.05per pick27cpaid-18.2%equal weight45-0.04 edge/pick
0xf332…3c89backed Gauff56c1,447$804 inLost — open this pick on its own page-$803.9140141.9%168 W · 233 L+9.3wins+0.02per pick40cpaid+2%equal weight52+0.02 edge/pick
0xfb85…8464backed Gauff29c1,390$400 inLost — open this pick on its own page-$40072132%231 W · 490 L-17.8wins-0.02per pick35cpaid-19.3%equal weight47-0.02 edge/pick
0xae90…f6c8backed Svitolina37c1,373$508 inWon — open this pick on its own page+$865.066937.7%26 W · 43 L-2.2wins-0.03per pick41cpaid-0.2%equal weight47-0.02 edge/pick
0x300c…7708backed Gauff33c1,365$451 inLost — open this pick on its own page-$450.542142.9%9 W · 12 L+2.3wins+0.11per pick32cpaid+27.1%equal weight55+0.05 edge/pick
0x0748…a31ebacked Gauff63c1,308$824 inLost — open this pick on its own page-$824.25862.5%5 W · 3 L+1.6wins+0.20per pick43cpaid+62%equal weight55+0.05 edge/pick
0x48de…95babacked Svitolina36c1,297$467 inWon — open this pick on its own page+$830.2262545.4%284 W · 341 L-7.7wins-0.01per pick47cpaid-3.1%equal weight49-0.01 edge/pick
0x685d…22d6backed Gauff65c1,250$813 inLost — open this pick on its own page-$812.532650%13 W · 13 L-1.4wins-0.05per pick55cpaid-17.9%equal weight47-0.03 edge/pick
0x06a9…3b80backed Gauff64c1,250$800 inLost — open this pick on its own page-$799.9911843.2%51 W · 67 L-5.1wins-0.04per pick48cpaid-13.4%equal weight46-0.04 edge/pick
0xdbb9…ed8dbacked Gauff62c1,246$772 inLost — open this pick on its own page-$772.361,03954.6%567 W · 472 L+37.6wins+0.04per pick51cpaid+7.7%equal weight54+0.04 edge/pick
0xd5a1…0544backed Svitolina36c1,228$442 inWon — open this pick on its own page+$785.9231753.6%170 W · 147 L+17.4wins+0.05per pick48cpaid+13.4%equal weight56+0.05 edge/pick
0x1089…830ebacked Gauff47c1,115$520 inLost — open this pick on its own page-$52040%0 W · 4 L-1.5wins-0.37per pick37cpaid-100%equal weight44-0.05 edge/pick
0xa8ba…bbb6backed Svitolina36c1,111$400 inWon — open this pick on its own page+$711.113647.2%17 W · 19 L+0.2wins+0.01per pick47cpaid+8.9%equal weight500.00 edge/pick
0x4042…0bdabacked Svitolina36c1,111$400 inWon — open this pick on its own page+$711.0998240.1%394 W · 588 L-7.1wins-0.01per pick41cpaid-1.2%equal weight49-0.01 edge/pick
0xe889…d0c3backed Gauff63c1,096$695 inLost — open this pick on its own page-$695.3817432.2%56 W · 118 L-15.1wins-0.09per pick41cpaid-22%equal weight42-0.08 edge/pick
0xfa9a…099fbacked Gauff9c1,078$100 inLost — open this pick on its own page-$1004427.3%12 W · 32 L+2.7wins+0.06per pick21cpaid-2%equal weight54+0.04 edge/pick
0x094d…59f3backed Gauff28c1,059$295 inLost — open this pick on its own page-$2954938.8%19 W · 30 L-1.8wins-0.04per pick42cpaid-23.4%equal weight47-0.02 edge/pick
0xac0a…f89ebacked Svitolina37c1,057$391 inWon — open this pick on its own page+$665.637146.5%33 W · 38 L+1.7wins+0.02per pick44cpaid+2.1%equal weight52+0.02 edge/pick
0x1624…bf63backed Gauff57c1,038$592 inLost — open this pick on its own page-$591.661,10641%454 W · 652 L+2.5wins0.00per pick41cpaid-19.4%equal weight500.00 edge/pick
0x87a4…953ebacked Svitolina65c1,032$672 inWon — open this pick on its own page+$360.311,05655.4%585 W · 471 L-22.8wins-0.02per pick58cpaid-8.8%equal weight48-0.02 edge/pick
0x2060…9186backed Gauff65c1,000$650 inLost — open this pick on its own page-$650.0812861.7%79 W · 49 L+2.9wins+0.02per pick59cpaid+2.2%equal weight52+0.02 edge/pick
0xd161…4cc1backed Svitolina68c1,000$680 inWon — open this pick on its own page+$3201643.8%7 W · 9 L-0.3wins-0.02per pick46cpaid-26%equal weight49-0.01 edge/pick
0xa49b…4c40backed Svitolina37c1,000$370 inWon — open this pick on its own page+$63011230.4%34 W · 78 L-4.4wins-0.04per pick34cpaid-30.9%equal weight46-0.03 edge/pick
0xaeb5…58e2backed Gauff33c999.95$330 inLost — open this pick on its own page-$329.9881938.9%319 W · 500 L-4.5wins-0.01per pick39cpaid-8%equal weight49-0.01 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.

The rest of this event

Polymarket sells these questions together. 8 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.

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.