TailMyPicks

Check any Polymarket wallet’s real record.

Tennis · resolved market

US Open, Qualification ATP: Stefano Napolitano vs Mackenzie McDonald

Rebuilt .

What this market resolved to

Winning outcome
Mackenzie McDonaldof Stefano Napolitano, Mackenzie McDonald
Resolved
US/Eastern, the zone Polymarket writes its markets in
Scored in
Tennisevery record on this page is that Category’s
Volume Polymarket published
$48,986
Volume TailMyPicks’s own read summed
$51,473

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 $48,986 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

All 68 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 marketThis wallet’s whole record in Tennis
WalletEntryPositionResultP/L heldQualified picksWin ratevs expectedRealizable edgeAvg entryROI per pickTail Score
0xfe78…0319backed Stefano Napolitano20c11,009$2,147 inLost — open this pick on its own page-$2,146.829,03836.1%3,266 W · 5,772 L-196.3wins-0.02per pick38cpaid-27%equal weight48-0.02 edge/pick
0x5268…135dbacked Stefano Napolitano23c10,189$2,394 inLost — open this pick on its own page-$2,394.24,25345%1,912 W · 2,341 L+20.1wins0.00per pick44cpaid-17%equal weight510.00 edge/pick
0xca64…4f43backed Mackenzie McDonald72c3,465$2,489 inWon — open this pick on its own page+$976.896453.1%34 W · 30 L-4.1wins-0.06per pick60cpaid+0.7%equal weight45-0.05 edge/pick
0xacf8…e791backed Stefano Napolitano30c3,011$903 inLost — open this pick on its own page-$903.2533737.1%125 W · 212 L-6.4wins-0.02per pick39cpaid-10%equal weight48-0.02 edge/pick
0x55b9…a814backed Mackenzie McDonald79c2,293$1,811 inWon — open this pick on its own page+$481.4741748.2%201 W · 216 L+4.2wins+0.01per pick47cpaid-14.8%equal weight51+0.01 edge/pick
0x2b6d…27bbbacked Mackenzie McDonald73c2,205$1,610 inWon — open this pick on its own page+$595.391457.1%8 W · 6 L+0.4wins+0.03per pick54cpaid+0.8%equal weight51+0.01 edge/pick
0x0d2d…7ff5backed Mackenzie McDonald77c1,793$1,373 inWon — open this pick on its own page+$420.118,70242.6%3,708 W · 4,994 L-165.1wins-0.02per pick45cpaid-21.2%equal weight48-0.02 edge/pick
0xeea3…a6a2backed Stefano Napolitano20c1,297$261 inLost — open this pick on its own page-$260.83,15557.2%1,806 W · 1,349 L+176.3wins+0.06per pick52cpaid-3.8%equal weight56+0.06 edge/pick
0x2005…75eabacked Stefano Napolitano25c1,214$304 inLost — open this pick on its own page-$304.3711,66643.4%5,059 W · 6,607 L+22.2wins0.00per pick43cpaid-20%equal weight500.00 edge/pick
0x7dde…30b1backed Mackenzie McDonald76c1,003$762 inWon — open this pick on its own page+$241.0788157.9%510 W · 371 L+15.1wins+0.02per pick56cpaid-2.6%equal weight52+0.02 edge/pick
0xf1f2…8c8dbacked Mackenzie McDonald79c1,003$796 inWon — open this pick on its own page+$206.81,76645.9%810 W · 956 L-10.7wins-0.01per pick46cpaid-20.8%equal weight49-0.01 edge/pick
0x2b49…d827backed Mackenzie McDonald71c975$692 inWon — open this pick on its own page+$282.752955.2%16 W · 13 L+0.8wins+0.03per pick52cpaid+7.7%equal weight52+0.01 edge/pick
0x42c9…9623backed Stefano Napolitano20c963.62$189 inLost — open this pick on its own page-$189.164,76049.6%2,361 W · 2,399 L+176.3wins+0.04per pick46cpaid-3.1%equal weight54+0.04 edge/pick
0x3a14…9fe4backed Stefano Napolitano21c961.62$197 inLost — open this pick on its own page-$197.3641535.4%147 W · 268 L+7.4wins+0.02per pick34cpaid-3.9%equal weight52+0.02 edge/pick
0x98db…dd17backed Stefano Napolitano27c852$226 inLost — open this pick on its own page-$225.975,42256.3%3,054 W · 2,368 L+231.5wins+0.04per pick52cpaid-6.4%equal weight55+0.04 edge/pick
0xd9e0…05f2backed Mackenzie McDonald75c803.58$605 inWon — open this pick on its own page+$198.582,83947.2%1,340 W · 1,499 L+38.6wins+0.01per pick46cpaid-19.2%equal weight51+0.01 edge/pick
0xe1e3…f1bdbacked Mackenzie McDonald80c743.45$592 inWon — open this pick on its own page+$151.61,00857.7%582 W · 426 L+7.4wins+0.01per pick57cpaid-4.1%equal weight51+0.01 edge/pick
0xad1f…7f94backed Stefano Napolitano27c715.44$192 inLost — open this pick on its own page-$192.124037.5%15 W · 25 L-1.1wins-0.03per pick40cpaid-9%equal weight48-0.02 edge/pick
0x95f5…ecf5backed Mackenzie McDonald74c667.4$495 inWon — open this pick on its own page+$172.432951.7%15 W · 14 L+0.8wins+0.03per pick49cpaid+4.7%equal weight52+0.01 edge/pick
0xab9d…cf12backed Mackenzie McDonald76c657.89$500 inWon — open this pick on its own page+$157.893063.3%19 W · 11 L-0.5wins-0.02per pick65cpaid-2.1%equal weight49-0.01 edge/pick
0xedd0…b03abacked Mackenzie McDonald72c630$454 inWon — open this pick on its own page+$176.42951.7%15 W · 14 L-0.2wins-0.01per pick53cpaid-3.7%equal weight490.00 edge/pick
0x5929…4684backed Mackenzie McDonald72c540.83$389 inWon — open this pick on its own page+$151.633,79854.9%2,087 W · 1,711 L+111.3wins+0.03per pick52cpaid-1.3%equal weight53+0.03 edge/pick
0x6d3c…d294backed Mackenzie McDonald79c503.62$398 inWon — open this pick on its own page+$105.762,44451.3%1,254 W · 1,190 L+14.1wins+0.01per pick51cpaid+0.2%equal weight51+0.01 edge/pick
0x365f…706abacked Mackenzie McDonald80c356.27$285 inWon — open this pick on its own page+$71.471,82446.5%849 W · 975 L+20.6wins+0.01per pick45cpaid-19.2%equal weight51+0.01 edge/pick
0xe907…cff6backed Stefano Napolitano28c335.18$95 inLost — open this pick on its own page-$95.222,88739.5%1,141 W · 1,746 L-84.0wins-0.03per pick42cpaid-22.7%equal weight47-0.03 edge/pick
0x3311…1063backed Mackenzie McDonald72c277.78$200 inWon — open this pick on its own page+$77.784100%4 W · 0 L+1.6wins+0.39per pick61cpaid+67%equal weight56+0.05 edge/pick
0x6318…46b1backed Stefano Napolitano19c260.8$50 inLost — open this pick on its own page-$505,32528.8%1,533 W · 3,792 L-21.8wins0.00per pick29cpaid-2.1%equal weight500.00 edge/pick
0x0f17…0724backed Stefano Napolitano21c258.08$54 inLost — open this pick on its own page-$53.6574654.8%409 W · 337 L+46.0wins+0.06per pick49cpaid+4.1%equal weight57+0.06 edge/pick
0xd755…472fbacked Stefano Napolitano17c237.36$40 inLost — open this pick on its own page-$40837.5%3 W · 5 L+1.3wins+0.16per pick21cpaid+36.8%equal weight54+0.04 edge/pick
0x1cba…b694backed Mackenzie McDonald76c180.39$137 inWon — open this pick on its own page+$43.591,47643.8%647 W · 829 L-26.1wins-0.02per pick46cpaid-24.7%equal weight48-0.02 edge/pick
0xa55c…1066backed Mackenzie McDonald72c172.5$124 inWon — open this pick on its own page+$48.345549.7%226 W · 229 L+1.8wins0.00per pick49cpaid-1.9%equal weight500.00 edge/pick
0xbfd7…f0bfbacked Mackenzie McDonald73c154.24$112 inWon — open this pick on its own page+$427,96850.7%4,038 W · 3,930 L+92.5wins+0.01per pick50cpaid-4.7%equal weight51+0.01 edge/pick
0x13f7…85d5backed Mackenzie McDonald71c150.26$107 inWon — open this pick on its own page+$42.981,31439%512 W · 802 L-23.2wins-0.02per pick41cpaid-27.7%equal weight48-0.02 edge/pick
0xa177…4b0dbacked Stefano Napolitano14c137.86$19 inLost — open this pick on its own page-$19.313626.5%36 W · 100 L-1.1wins-0.01per pick27cpaid+0.5%equal weight49-0.01 edge/pick
0x1d6d…f2b4backed Mackenzie McDonald80c132.22$106 inWon — open this pick on its own page+$26.5248258.1%280 W · 202 L-13.3wins-0.03per pick61cpaid-7.4%equal weight47-0.03 edge/pick
0x8a3d…316cbacked Stefano Napolitano21c100$21 inLost — open this pick on its own page-$212,04347.8%977 W · 1,066 L+14.4wins+0.01per pick47cpaid+0.7%equal weight51+0.01 edge/pick
0xdf8c…e040backed Mackenzie McDonald74c100$74 inWon — open this pick on its own page+$2665437.5%245 W · 409 L-33.3wins-0.05per pick43cpaid-32.3%equal weight45-0.05 edge/pick
0x23bc…5487backed Stefano Napolitano18c99.82$18 inLost — open this pick on its own page-$1827832.4%90 W · 188 L-2.2wins-0.01per pick33cpaid-19.8%equal weight49-0.01 edge/pick
0xc8f4…6794backed Mackenzie McDonald78c95$74 inWon — open this pick on its own page+$21.3537853.7%203 W · 175 L+12.7wins+0.03per pick50cpaid+8.7%equal weight54+0.03 edge/pick
0x3ca9…424abacked Mackenzie McDonald79c91.48$73 inWon — open this pick on its own page+$18.761,87853.2%1,000 W · 878 L+30.1wins+0.02per pick52cpaid-9%equal weight52+0.02 edge/pick
0xf6f7…c7a2backed Mackenzie McDonald80c87.5$70 inWon — open this pick on its own page+$17.529955.2%165 W · 134 L+10.0wins+0.03per pick52cpaid+9.7%equal weight53+0.03 edge/pick
0x84ad…bfb7backed Mackenzie McDonald80c81$65 inWon — open this pick on its own page+$16.464,60267.8%3,119 W · 1,483 L+309.9wins+0.07per pick61cpaid+5.1%equal weight57+0.07 edge/pick
0x581e…5d85backed Stefano Napolitano20c80$16 inLost — open this pick on its own page-$165947.5%28 W · 31 L-1.1wins-0.02per pick49cpaid-9.2%equal weight49-0.01 edge/pick
0xc4db…7e0cbacked Stefano Napolitano20c75$15 inLost — open this pick on its own page-$153,88435%1,358 W · 2,526 L+92.8wins+0.02per pick33cpaid+8.2%equal weight53+0.02 edge/pick
0x24ce…da46backed Stefano Napolitano26c71.95$18 inLost — open this pick on its own page-$18.4247148.2%227 W · 244 L+4.8wins+0.01per pick47cpaid-6.5%equal weight51+0.01 edge/pick
0xfea6…b795backed Stefano Napolitano21c67.47$14 inLost — open this pick on its own page-$14.1357841%237 W · 341 L-22.0wins-0.04per pick45cpaid-25.6%equal weight46-0.04 edge/pick
0xa509…ae46backed Stefano Napolitano24c65.2$15 inLost — open this pick on its own page-$15.486,84048.8%3,341 W · 3,499 L+58.3wins+0.01per pick48cpaid-15.4%equal weight51+0.01 edge/pick
0x08c8…016abacked Mackenzie McDonald80c60.34$48 inWon — open this pick on its own page+$12.3437558.1%218 W · 157 L-17.8wins-0.05per pick63cpaid-8.3%equal weight45-0.04 edge/pick
0x5803…3f3fbacked Mackenzie McDonald71c56.61$40 inWon — open this pick on its own page+$16.6299148.6%482 W · 509 L+43.3wins+0.04per pick44cpaid+1.1%equal weight55+0.04 edge/pick
0x571f…1d37backed Stefano Napolitano26c56.1$15 inLost — open this pick on its own page-$14.831,07654.8%590 W · 486 L+14.6wins+0.01per pick53cpaid-8%equal weight51+0.01 edge/pick
0x8fab…3cabbacked Stefano Napolitano28c50$14 inLost — open this pick on its own page-$1426330.8%81 W · 182 L-5.2wins-0.02per pick33cpaid-14.9%equal weight48-0.02 edge/pick
0xc611…cc2ebacked Mackenzie McDonald76c43.4$33 inWon — open this pick on its own page+$10.2410452.9%55 W · 49 L+1.4wins+0.01per pick52cpaid-3.6%equal weight51+0.01 edge/pick
0xd13e…ed01backed Mackenzie McDonald73c39$29 inWon — open this pick on its own page+$10.3434854.3%189 W · 159 L+14.7wins+0.04per pick50cpaid+9.6%equal weight54+0.04 edge/pick
0x1a3e…cd83backed Mackenzie McDonald65c30$20 inWon — open this pick on its own page+$10.545553%241 W · 214 L+9.8wins+0.02per pick51cpaid+4.2%equal weight52+0.02 edge/pick
0x8087…a213backed Mackenzie McDonald71c28$20 inWon — open this pick on its own page+$8.1238866.2%257 W · 131 L+4.7wins+0.01per pick65cpaid+2.6%equal weight51+0.01 edge/pick
0x0df7…1ec1backed Mackenzie McDonald76c27.36$21 inWon — open this pick on its own page+$6.571,88257.4%1,081 W · 801 L+104.3wins+0.06per pick52cpaid+2.8%equal weight56+0.05 edge/pick
0x076d…8d4cbacked Mackenzie McDonald77c26.51$20 inWon — open this pick on its own page+$6.14,34152.3%2,271 W · 2,070 L+63.3wins+0.01per pick51cpaid-2%equal weight52+0.01 edge/pick
0x77c9…f4dabacked Mackenzie McDonald74c25$19 inWon — open this pick on its own page+$6.57149.3%35 W · 36 L-2.0wins-0.03per pick52cpaid-12%equal weight48-0.02 edge/pick
0x97de…27d1backed Mackenzie McDonald67c22$15 inWon — open this pick on its own page+$7.266556.9%37 W · 28 L+4.1wins+0.06per pick51cpaid+10.3%equal weight55+0.05 edge/pick
0xa9e7…af6bbacked Mackenzie McDonald80c20$16 inWon — open this pick on its own page+$43259.4%19 W · 13 L-1.4wins-0.04per pick64cpaid-8.2%equal weight47-0.03 edge/pick
0x2c33…0563backed Mackenzie McDonald74c19$14 inWon — open this pick on its own page+$4.941,21746.3%563 W · 654 L+0.2wins0.00per pick46cpaid-11.1%equal weight500.00 edge/pick
0xf9ad…5097backed Mackenzie McDonald74c15$11 inWon — open this pick on its own page+$3.8528168.7%193 W · 88 L+13.9wins+0.05per pick64cpaid+4.4%equal weight55+0.05 edge/pick
0x23df…640abacked Mackenzie McDonald73c15$11 inWon — open this pick on its own page+$4.0548858%283 W · 205 L+24.7wins+0.05per pick53cpaid+7.4%equal weight55+0.05 edge/pick
0x7523…68a0backed Mackenzie McDonald80c15$12 inWon — open this pick on its own page+$311557.4%66 W · 49 L-4.9wins-0.04per pick62cpaid-12.2%equal weight46-0.03 edge/pick
0x6b23…04a3backed Mackenzie McDonald78c14.23$11 inWon — open this pick on its own page+$3.152,08754.1%1,130 W · 957 L+64.7wins+0.03per pick51cpaid+1%equal weight53+0.03 edge/pick
0x147c…2540backed Mackenzie McDonald79c13$10 inWon — open this pick on its own page+$2.7330465.5%199 W · 105 L+13.4wins+0.04per pick61cpaid+8.8%equal weight55+0.04 edge/pick
0x18d8…da3bbacked Mackenzie McDonald79c12.74$10 inWon — open this pick on its own page+$2.6838148.3%184 W · 197 L+28.3wins+0.07per pick41cpaid+13.2%equal weight58+0.07 edge/pick
0xd515…2c54backed Mackenzie McDonald80c12.5$10 inWon — open this pick on its own page+$2.53865.8%25 W · 13 L+1.4wins+0.04per pick62cpaid+6.5%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. 2 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.