TailMyPicks

Check any Polymarket wallet’s real record.

Tennis · resolved market

Australian Open Men's: Alexander Zverev vs Learner Tien

Rebuilt .

What this market resolved to

Winning outcome
Zverevof Zverev, Tien
Resolved
US/Eastern, the zone Polymarket writes its markets in
Scored in
Tennisevery record on this page is that Category’s
Volume Polymarket published
$1,329,856
Volume TailMyPicks’s own read summed
$1,444,497

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 $1,329,856 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 599 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
0x2727…eef4backed Tien26c176,325$45,518 inLost — open this pick on its own page-$45,518.1119134%65 W · 126 L+6.4wins+0.03per pick31cpaid+3.9%equal weight53+0.03 edge/pick
0x817b…3c25backed Tien4c76,811$2,893 inLost — open this pick on its own page-$2,892.83812.5%1 W · 7 L-1.4wins-0.18per pick30cpaid-62.1%equal weight45-0.04 edge/pick
0x5877…d894backed Tien34c65,390$22,233 inLost — open this pick on its own page-$22,232.6111633.6%39 W · 77 L-7.1wins-0.06per pick40cpaid-14.2%equal weight44-0.05 edge/pick
0x3b5c…126ebacked Tien19c41,369$7,757 inLost — open this pick on its own page-$7,756.5980938.8%314 W · 495 L+5.4wins+0.01per pick38cpaid-23.1%equal weight51+0.01 edge/pick
0x204f…5e14backed Zverev76c37,857$28,836 inWon — open this pick on its own page+$9,020.288,21745.5%3,737 W · 4,480 L+166.6wins+0.02per pick43cpaid-16.3%equal weight52+0.02 edge/pick
0xe90b…5da2backed Tien15c36,329$5,434 inLost — open this pick on its own page-$5,433.8111242.9%48 W · 64 L-2.8wins-0.02per pick45cpaid-22.9%equal weight48-0.02 edge/pick
0x1a65…15b1backed Zverev66c26,866$17,656 inWon — open this pick on its own page+$9,209.953046.7%14 W · 16 L-0.2wins-0.01per pick47cpaid-16%equal weight500.00 edge/pick
0xd6a3…9489backed Tien14c26,585$3,807 inLost — open this pick on its own page-$3,806.532,74630.8%846 W · 1,900 L-67.1wins-0.02per pick33cpaid-36.1%equal weight47-0.02 edge/pick
0x9f13…e0fdbacked Tien33c25,086$8,278 inLost — open this pick on its own page-$8,278.2676140.6%309 W · 452 L-15.3wins-0.02per pick43cpaid-6.4%equal weight48-0.02 edge/pick
0x8f03…64d6backed Zverev67c25,025$16,766 inWon — open this pick on its own page+$8,258.111258.3%7 W · 5 L+0.9wins+0.07per pick51cpaid+15.7%equal weight53+0.02 edge/pick
0x160b…4296backed Zverev65c20,440$13,294 inWon — open this pick on its own page+$7,145.521,65849.9%828 W · 830 L+7.9wins0.00per pick49cpaid+0.3%equal weight510.00 edge/pick
0x9d94…017dbacked Tien18c19,642$3,547 inLost — open this pick on its own page-$3,546.972,06834.9%721 W · 1,347 L-44.2wins-0.02per pick37cpaid-25.6%equal weight48-0.02 edge/pick
0x6d3c…d294backed Zverev66c16,838$11,079 inWon — open this pick on its own page+$5,758.42,37551.1%1,213 W · 1,162 L+8.6wins0.00per pick51cpaid-0.2%equal weight500.00 edge/pick
0xeb50…be06backed Zverev66c16,667$11,000 inWon — open this pick on its own page+$5,666.671050%5 W · 5 L-1.2wins-0.12per pick62cpaid-22.9%equal weight46-0.03 edge/pick
0xd568…a35abacked Zverev68c14,715$10,000 inWon — open this pick on its own page+$4,715.264560%27 W · 18 L+4.1wins+0.09per pick51cpaid+21.5%equal weight57+0.06 edge/pick
0xc2fb…b9f0backed Tien34c14,706$5,000 inLost — open this pick on its own page-$5,000.09425%1 W · 3 L-1.1wins-0.27per pick52cpaid-59.1%equal weight46-0.04 edge/pick
0xac0a…f89ebacked Tien32c14,535$4,682 inLost — open this pick on its own page-$4,681.527146.5%33 W · 38 L+1.7wins+0.02per pick44cpaid+2.1%equal weight52+0.02 edge/pick
0x83b6…9dbdbacked Zverev66c14,266$9,416 inWon — open this pick on its own page+$4,850.52757.1%4 W · 3 L+0.6wins+0.09per pick48cpaid+7.4%equal weight52+0.02 edge/pick
0x2005…75eabacked Tien17c14,100$2,397 inLost — open this pick on its own page-$2,396.8111,43543.4%4,959 W · 6,476 L+17.8wins0.00per pick43cpaid-20.1%equal weight500.00 edge/pick
0x3450…6793backed Zverev68c14,042$9,500 inWon — open this pick on its own page+$4,541.652770.4%19 W · 8 L+4.4wins+0.16per pick54cpaid+31.6%equal weight59+0.08 edge/pick
0x155d…2525backed Zverev70c13,231$9,249 inWon — open this pick on its own page+$3,982.04666.7%4 W · 2 L+0.6wins+0.11per pick56cpaid+1.9%equal weight52+0.02 edge/pick
0x067f…e041backed Tien16c12,500$2,000 inLost — open this pick on its own page-$2,00017823%41 W · 137 L-8.6wins-0.05per pick28cpaid-43.2%equal weight45-0.04 edge/pick
0x3b5a…bb9bbacked Tien12c12,001$1,454 inLost — open this pick on its own page-$1,453.761540%6 W · 9 L+1.2wins+0.08per pick32cpaid-7%equal weight53+0.03 edge/pick
0x081c…f010backed Tien33c11,073$3,654 inLost — open this pick on its own page-$3,654.132733.3%9 W · 18 L-2.6wins-0.10per pick43cpaid-32.2%equal weight44-0.05 edge/pick
0xe542…0a37backed Tien0c11,000$11 inLost — open this pick on its own page-$1122723.8%54 W · 173 L+5.1wins+0.02per pick22cpaid-35.8%equal weight52+0.02 edge/pick
0x048b…09efbacked Tien33c10,086$3,328 inLost — open this pick on its own page-$3,328.311020%2 W · 8 L-0.8wins-0.08per pick28cpaid+66.6%equal weight47-0.02 edge/pick
0x42c1…e644backed Zverev67c10,005$6,703 inWon — open this pick on its own page+$3,301.674266.7%28 W · 14 L+1.7wins+0.04per pick63cpaid+5.3%equal weight53+0.03 edge/pick
0xf5e1…5ad0backed Zverev66c10,000$6,600 inWon — open this pick on its own page+$3,4005955.9%33 W · 26 L+4.9wins+0.08per pick48cpaid+31.8%equal weight57+0.06 edge/pick
0x979f…4032backed Tien35c10,000$3,500 inLost — open this pick on its own page-$3,50010162.4%63 W · 38 L+2.1wins+0.02per pick60cpaid+2.7%equal weight52+0.02 edge/pick
0x11e2…26ccbacked Zverev65c9,680$6,289 inWon — open this pick on its own page+$3,391.363537.1%13 W · 22 L-1.5wins-0.04per pick42cpaid-22.1%equal weight47-0.03 edge/pick
0xd289…079fbacked Zverev66c9,483$6,259 inWon — open this pick on its own page+$3,224.332568%17 W · 8 L+2.7wins+0.11per pick57cpaid+8%equal weight56+0.05 edge/pick
0x9e5c…d8e6backed Tien33c9,000$2,970 inLost — open this pick on its own page-$2,9701,09035.9%391 W · 699 L+16.2wins+0.01per pick34cpaid-6.3%equal weight52+0.01 edge/pick
0xadb4…3214backed Tien34c9,000$3,060 inLost — open this pick on its own page-$3,0602326.1%6 W · 17 L-1.3wins-0.06per pick32cpaid-12.7%equal weight47-0.03 edge/pick
0x336b…1233backed Zverev66c9,000$5,940 inWon — open this pick on its own page+$3,06057939.7%230 W · 349 L-0.5wins0.00per pick40cpaid-5.4%equal weight500.00 edge/pick
0xd696…8a49backed Zverev65c8,766$5,698 inWon — open this pick on its own page+$3,068.0214450.7%73 W · 71 L+6.9wins+0.05per pick46cpaid+11.8%equal weight55+0.04 edge/pick
0xbdc3…c0eabacked Zverev67c8,266$5,549 inWon — open this pick on its own page+$2,716.7713363.9%85 W · 48 L+5.1wins+0.04per pick60cpaid-1.3%equal weight54+0.03 edge/pick
0x046c…2a9cbacked Zverev67c7,591$5,086 inWon — open this pick on its own page+$2,505.1235247.2%166 W · 186 L-23.2wins-0.07per pick54cpaid-16.5%equal weight43-0.06 edge/pick
0xa1b3…0329backed Zverev68c7,353$5,000 inWon — open this pick on its own page+$2,352.9410440.4%42 W · 62 L+6.3wins+0.06per pick34cpaid+14%equal weight55+0.05 edge/pick
0xe786…b716backed Tien36c7,186$2,579 inLost — open this pick on its own page-$2,578.669264.1%59 W · 33 L+4.0wins+0.04per pick60cpaid+5%equal weight54+0.03 edge/pick
0xc6b6…13acbacked Tien33c6,818$2,250 inLost — open this pick on its own page-$2,2502360.9%14 W · 9 L+2.7wins+0.12per pick49cpaid+24.3%equal weight56+0.06 edge/pick
0x893a…29dcbacked Tien16c6,251$1,000 inLost — open this pick on its own page-$1,000333.3%1 W · 2 L+0.1wins+0.05per pick29cpaid-29.1%equal weight51+0.01 edge/pick
0x33c9…6f9abacked Zverev70c5,938$4,178 inWon — open this pick on its own page+$1,759.7993055.8%519 W · 411 L+23.8wins+0.03per pick53cpaid+1.1%equal weight53+0.02 edge/pick
0x9c16…09cbbacked Zverev65c5,868$3,814 inWon — open this pick on its own page+$2,053.953268.8%22 W · 10 L+6.5wins+0.20per pick48cpaid+31.9%equal weight63+0.11 edge/pick
0x39c6…0ac1backed Zverev66c5,814$3,837 inWon — open this pick on its own page+$1,976.6433241.6%138 W · 194 L-10.7wins-0.03per pick45cpaid-6.6%equal weight47-0.03 edge/pick
0x6814…a9e7backed Zverev76c5,505$4,188 inWon — open this pick on its own page+$1,317.383,07244.9%1,378 W · 1,694 L-30.9wins-0.01per pick46cpaid-23%equal weight49-0.01 edge/pick
0x6b7c…5f83backed Tien12c5,374$640 inLost — open this pick on its own page-$640.472,42647.3%1,148 W · 1,278 L+45.2wins+0.02per pick45cpaid-13.4%equal weight52+0.02 edge/pick
0x1997…2e36backed Tien24c5,101$1,231 inLost — open this pick on its own page-$1,231.358158%47 W · 34 L+4.4wins+0.05per pick53cpaid+6.7%equal weight55+0.04 edge/pick
0x9fa9…c100backed Zverev67c5,000$3,350 inWon — open this pick on its own page+$1,65043051.2%220 W · 210 L+5.2wins+0.01per pick50cpaid+2.1%equal weight51+0.01 edge/pick
0xaea0…0decbacked Zverev76c4,869$3,683 inWon — open this pick on its own page+$1,185.7597046.6%452 W · 518 L-8.0wins-0.01per pick47cpaid-17.5%equal weight49-0.01 edge/pick
0x5f19…ec51backed Zverev76c4,279$3,243 inWon — open this pick on its own page+$1,036.239541.1%39 W · 56 L-7.1wins-0.07per pick49cpaid-36%equal weight43-0.06 edge/pick
0x4536…4237backed Tien33c4,236$1,398 inLost — open this pick on its own page-$1,39820%0 W · 2 L-0.5wins-0.26per pick26cpaid-100%equal weight48-0.02 edge/pick
0x67be…6e09backed Tien12c4,071$481 inLost — open this pick on its own page-$48148941.1%201 W · 288 L-0.4wins0.00per pick41cpaid-3.2%equal weight500.00 edge/pick
0x9fad…5a9fbacked Zverev66c4,000$2,640 inWon — open this pick on its own page+$1,360.0216825%42 W · 126 L-14.2wins-0.08per pick33cpaid-39.3%equal weight42-0.07 edge/pick
0xc3e4…5bf6backed Tien28c4,000$1,120 inLost — open this pick on its own page-$1,12020653.4%110 W · 96 L+1.3wins+0.01per pick53cpaid-5.6%equal weight51+0.01 edge/pick
0x5067…a127backed Zverev77c3,774$2,923 inWon — open this pick on its own page+$851.4410756.1%60 W · 47 L+1.1wins+0.01per pick55cpaid+8.6%equal weight51+0.01 edge/pick
0x40ed…4ae2backed Zverev68c3,737$2,541 inWon — open this pick on its own page+$1,195.78450%2 W · 2 L-0.6wins-0.15per pick65cpaid-25.7%equal weight48-0.02 edge/pick
0x3500…2e0bbacked Zverev67c3,736$2,521 inWon — open this pick on its own page+$1,214.49450%2 W · 2 L-0.3wins-0.08per pick58cpaid-24.7%equal weight49-0.01 edge/pick
0xc49f…9e05backed Zverev66c3,574$2,359 inWon — open this pick on its own page+$1,215.3312147.1%57 W · 64 L+3.2wins+0.03per pick44cpaid+6.7%equal weight52+0.02 edge/pick
0x85d5…bbf0backed Tien19c3,511$680 inLost — open this pick on its own page-$679.830530.8%94 W · 211 L-9.5wins-0.03per pick34cpaid-13.8%equal weight47-0.03 edge/pick
0x0940…3640backed Zverev66c3,491$2,304 inWon — open this pick on its own page+$1,186.91250%1 W · 1 L+0.3wins+0.16per pick34cpaid-24.2%equal weight51+0.01 edge/pick
0x498c…42bfbacked Zverev66c3,419$2,252 inWon — open this pick on its own page+$1,166.574560%27 W · 18 L-0.8wins-0.02per pick62cpaid-0.9%equal weight49-0.01 edge/pick
0xe7a2…ae70backed Zverev66c3,330$2,198 inWon — open this pick on its own page+$1,132.2115952.2%83 W · 76 L+1.6wins+0.01per pick51cpaid+2.2%equal weight51+0.01 edge/pick
0xda5f…2e9bbacked Tien32c3,301$1,050 inLost — open this pick on its own page-$1,049.5344754.4%243 W · 204 L-3.9wins-0.01per pick55cpaid-0.7%equal weight49-0.01 edge/pick
0xe5b4…1e3ebacked Zverev65c3,300$2,145 inWon — open this pick on its own page+$1,15515244.1%67 W · 85 L-1.0wins-0.01per pick45cpaid-7.2%equal weight49-0.01 edge/pick
0xf38b…b601backed Tien34c3,201$1,088 inLost — open this pick on its own page-$1,088.245036%18 W · 32 L-0.2wins0.00per pick36cpaid-7.6%equal weight500.00 edge/pick
0x13ff…16a3backed Tien19c3,034$584 inLost — open this pick on its own page-$583.541540%6 W · 9 L-0.8wins-0.06per pick46cpaid-21.8%equal weight48-0.02 edge/pick
0x9b7a…bc22backed Tien33c3,030$1,000 inLost — open this pick on its own page-$1,0001618.8%3 W · 13 L-1.9wins-0.12per pick30cpaid-32.1%equal weight45-0.05 edge/pick
0x3905…82fcbacked Tien33c3,030$1,000 inLost — open this pick on its own page-$1,0005563.6%35 W · 20 L-0.5wins-0.01per pick64cpaid-2.4%equal weight49-0.01 edge/pick
0x6f3e…bcf8backed Zverev66c3,030$2,000 inWon — open this pick on its own page+$1,030.376146.6%355 W · 406 L-1.0wins0.00per pick47cpaid-1.3%equal weight500.00 edge/pick
0x0588…8f18backed Tien10c3,017$311 inLost — open this pick on its own page-$311.071020%2 W · 8 L+0.3wins+0.03per pick17cpaid-29%equal weight51+0.01 edge/pick
0xed2c…9597backed Tien33c3,000$990 inLost — open this pick on its own page-$9901526.7%4 W · 11 L-2.1wins-0.14per pick40cpaid-48.4%equal weight44-0.05 edge/pick
0x7523…4c4cbacked Zverev67c2,985$2,000 inWon — open this pick on its own page+$985.057047.1%33 W · 37 L-3.9wins-0.06per pick53cpaid-13.6%equal weight45-0.04 edge/pick
0xae30…079ebacked Tien34c2,945$1,001 inLost — open this pick on its own page-$1,001.3541645.4%189 W · 227 L-5.5wins-0.01per pick47cpaid+3.8%equal weight49-0.01 edge/pick
0x7434…2ff4backed Tien34c2,941$1,000 inLost — open this pick on its own page-$1,000812.5%1 W · 7 L-0.7wins-0.08per pick21cpaid-32.6%equal weight48-0.02 edge/pick
0x9dd9…08bdbacked Zverev75c2,871$2,143 inWon — open this pick on its own page+$727.761,85244.5%825 W · 1,027 L-20.3wins-0.01per pick46cpaid-18.8%equal weight49-0.01 edge/pick
0xaeb5…58e2backed Tien23c2,762$629 inLost — open this pick on its own page-$629.4381938.9%319 W · 500 L-4.5wins-0.01per pick39cpaid-8%equal weight49-0.01 edge/pick
0x64e9…eb4cbacked Zverev66c2,663$1,758 inWon — open this pick on its own page+$905.3811941.2%49 W · 70 L+3.0wins+0.03per pick39cpaid+2.9%equal weight52+0.02 edge/pick
0x2073…385bbacked Tien4c2,615$100 inLost — open this pick on its own page-$1008042.5%34 W · 46 L+1.9wins+0.02per pick40cpaid+10.5%equal weight52+0.02 edge/pick
0x59f1…a693backed Tien12c2,600$312 inLost — open this pick on its own page-$31210%0 W · 1 L-0.1wins-0.12per pick12cpaid-100%equal weight490.00 edge/pick
0xe60a…6a47backed Tien34c2,578$877 inLost — open this pick on its own page-$876.5225428%71 W · 183 L-13.4wins-0.05per pick33cpaid-24.6%equal weight45-0.05 edge/pick
0xb3ac…5018backed Tien35c2,551$893 inLost — open this pick on its own page-$89320844.2%92 W · 116 L-3.9wins-0.02per pick46cpaid-0.1%equal weight48-0.02 edge/pick
0x972b…78babacked Tien22c2,547$552 inLost — open this pick on its own page-$552.372,98239.1%1,167 W · 1,815 L-109.1wins-0.04per pick43cpaid-30.2%equal weight46-0.04 edge/pick
0x1388…339abacked Tien24c2,500$600 inLost — open this pick on its own page-$60022737.4%85 W · 142 L+2.8wins+0.01per pick36cpaid-9.8%equal weight51+0.01 edge/pick
0x09ad…819ebacked Zverev75c2,405$1,814 inWon — open this pick on its own page+$591.028060%48 W · 32 L+2.7wins+0.03per pick57cpaid-7.2%equal weight53+0.03 edge/pick
0x5d9e…e0e3backed Tien17c2,395$410 inLost — open this pick on its own page-$409.71,92355.4%1,066 W · 857 L-44.9wins-0.02per pick58cpaid-9.8%equal weight47-0.02 edge/pick
0x15fe…86bebacked Tien18c2,344$419 inLost — open this pick on its own page-$4195444.4%24 W · 30 L-1.8wins-0.03per pick48cpaid-22.5%equal weight47-0.02 edge/pick
0xe2e1…c20abacked Zverev79c2,321$1,824 inWon — open this pick on its own page+$497.1573745.2%333 W · 404 L-9.4wins-0.01per pick46cpaid-17.8%equal weight49-0.01 edge/pick
0x2930…4cf8backed Tien25c2,320$585 inLost — open this pick on its own page-$585.0512631%39 W · 87 L-0.5wins0.00per pick31cpaid-6.8%equal weight500.00 edge/pick
0x05e3…4b87backed Zverev66c2,227$1,470 inWon — open this pick on its own page+$757.2713852.9%73 W · 65 L-4.3wins-0.03per pick56cpaid-7.6%equal weight47-0.03 edge/pick
0x3ff2…49febacked Tien16c2,172$352 inLost — open this pick on its own page-$351.525731.6%18 W · 39 L-4.2wins-0.07per pick39cpaid-33.7%equal weight44-0.05 edge/pick
0x8a15…c93fbacked Zverev77c2,140$1,639 inWon — open this pick on its own page+$500.422100%2 W · 0 L+0.6wins+0.28per pick72cpaid+39.9%equal weight52+0.02 edge/pick
0x79cb…af57backed Tien35c2,000$700 inLost — open this pick on its own page-$7005545.5%25 W · 30 L-1.5wins-0.03per pick48cpaid-7.7%equal weight48-0.02 edge/pick
0xde7d…499ebacked Tien14c2,000$270 inLost — open this pick on its own page-$27027132.1%87 W · 184 L+8.5wins+0.03per pick29cpaid0%equal weight53+0.03 edge/pick
0x4b7c…ef52backed Tien34c2,000$680 inLost — open this pick on its own page-$6802657.7%15 W · 11 L+3.3wins+0.13per pick45cpaid-1.3%equal weight57+0.06 edge/pick
0x479e…91c3backed Zverev68c2,000$1,360 inWon — open this pick on its own page+$64044163.7%281 W · 160 L-6.8wins-0.02per pick65cpaid-4.4%equal weight48-0.01 edge/pick
0x7234…1d85backed Zverev67c2,000$1,340 inWon — open this pick on its own page+$659.999242.4%39 W · 53 L-8.0wins-0.09per pick51cpaid-19%equal weight42-0.07 edge/pick
0x19ff…d0d0backed Zverev66c1,818$1,200 inWon — open this pick on its own page+$618.18771.4%5 W · 2 L+1.4wins+0.20per pick52cpaid+25.1%equal weight55+0.04 edge/pick
0x06a9…3b80backed Tien34c1,800$612 inLost — open this pick on its own page-$61211843.2%51 W · 67 L-5.1wins-0.04per pick48cpaid-13.4%equal weight46-0.04 edge/pick
0xc44d…935cbacked Zverev67c1,642$1,100 inWon — open this pick on its own page+$541.79977.8%7 W · 2 L+1.7wins+0.18per pick59cpaid+35.6%equal weight55+0.05 edge/pick
0x7daf…0ec8backed Tien34c1,619$548 inLost — open this pick on its own page-$547.5510043%43 W · 57 L+3.0wins+0.03per pick40cpaid+12.5%equal weight53+0.02 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. 6 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.