Madrid Open, Qualification: Sloane Stephens vs Anhelina Kalinina
This Polymarket tracks who will advance in the Madrid Open qualifying match between Sloane Stephens and Anhelina Kalinina, originally scheduled for April 21, 2026 at 8:00 AM ET. The market resolves to the player who advances, and if the match is not played, ends in a tie, or is delayed more than 7 days, it may resolve under the market rules by the April 28, 2026 deadline. PolySpotter is currently tracking $4,984 in smart money activity with recent alerts highlighting both Stephens and Kalinina action.
12 smart money signals detected, totaling $228,911.
Categories: Tennis, Sports, Games
Notable Trades
86% win-rate sports bettor
A proven high-win-rate sports trader bought Anhelina Kalinina at 89¢ before a sharp move to 98¢, adding credible momentum despite the market already being liquid.
- This bettor wins 86% of resolved trades across 140 bets and has traded 89 events.
- They bought Anhelina Kalinina at 89¢, and the market moved to 98¢ right after.
- Volume jumped 10.4x versus normal activity, which supports the move rather than a random one-off bet.
$4,984 on Anhelina Kalinina | Wallet win rate: 86%
17-wallet cluster fades favorite
A 17-wallet funded cluster put $68k into the underdog side by selling Kalinina around 78-80%, creating a strong coordinated fade of a heavy favorite in a liquid tennis market.
- Three linked wallets from a 17-wallet funding cluster pushed $68k against the favorite within minutes.
- The biggest wallet is up about $496k lifetime, so this is not just random flow.
- They sold Kalinina at 78-80¢, which converts to buying Sloane Stephens around 20-22¢ for a high-upside underdog bet.
$68,305 on Sloane Stephens
85% winner joins 6-wallet fade
A proven 85% win-rate trader joined a 6-wallet coordinated move against Sloane right as the market swung sharply, making this a strong follow signal despite the modest individual size.
- This bettor wins 85% of their trades across 235 resolved markets and has traded more than $1.0M across 233 events
- Six wallets piled into Anhelina Kalinina for nearly $29k total, showing coordinated conviction rather than a solo bet
- The market snapped hard against Sloane, with her price falling from 85¢ to 55¢ in minutes, validating the direction of this trade
$1,620 on Anhelina Kalinina | Wallet win rate: 85%
6-wallet Kalinina push
A repeat new wallet joined a 6-wallet, nearly $29k one-sided move into Kalinina, and the trade caught a sharp 27-point price swing even in a liquid tennis market.
- Six wallets put nearly $29k on the same side, which is a strong coordinated directional signal.
- This wallet is only 20 days old but has already made four flagged large bets totaling about $20k.
- The trade effectively bought Kalinina at 29¢ after selling Stephens at 71¢, and the market moved fast around this flow.
$5,532 on Anhelina Kalinina | Wallet win rate: 33%
83% win-rate tennis bettor
Profitable cross-market bettor with an 83% win rate bought Sloane Stephens at 48¢ before a coordinated wave pushed the market to 86%, making this a strong signal worth surfacing.
- This bettor wins 83% of resolved trades and is up $46k on about $106k invested.
- They bought Sloane Stephens at 48¢, and the market is now 86¢ after a 23-point jump.
- Three wallets piled into the same side for $14.4k total, which adds conviction behind the move.
$4,698 on Sloane Stephens | Wallet win rate: 85%
Sharp bettor caught 28¢ move
A highly profitable serial sports trader with an 80% win rate bought Sloane Stephens at 58¢ before a coordinated move pushed the price to 86%, making this a strong sharp-money signal.
- This bettor wins 80% of their trades and is up $3.0M lifetime across 1,267 resolved bets
- Three wallets piled into the same side for $14.4k total, and the price jumped from 58¢ to 86¢
- Entry at 58¢ implied a big edge versus the market now pricing Stephens at 86%
$4,834 on Sloane Stephens | Wallet win rate: 80%
3-wallet surge before breakout
Three wallets piled into Sloane Stephens before a sharp move from 62¢ to 86¢, and this wallet is a repeat new-account whale despite an early weak record.
- Three wallets all bought Sloane Stephens, putting in about $14.4k on the same side.
- This buy went in at 62¢ and the market is now 86¢, so the move already proved right fast.
- The wallet is only 20 days old and has already triggered large-bet alerts 3 times with 6 positions placed.
$4,827 on Sloane Stephens | Wallet win rate: 33%
85% serial sports winner
A proven high-win-rate sports trader with activity across 232 events bought into a fast 27-point move on Stephens, suggesting informed momentum worth tracking despite the modest ticket size.
- This bettor wins 85% of resolved trades across 235 bets and has traded 232 different events.
- They bought Sloane Stephens at 79¢ during a rapid 27-point price jump in under 5 minutes.
- The market is deep and active, so this looks more like sharp momentum than a random thin-market punt.
$1,505 on Sloane Stephens | Wallet win rate: 85%
Sharp cluster buying Stephens
Two highly profitable serial traders joined a fast, one-sided move into Sloane Stephens, making this coordinated sports buy worth watching despite one weaker wallet in the cluster.
- Two wallets in this cluster have strong records: one wins 80% of 1,267 bets and is up $3.0M, another wins 83% of 12 bets and is up $46k.
- Three wallets bought $10.9k of Sloane Stephens within minutes as her price ripped 27 points in under 5 minutes.
- One sharp got in at 48¢ while the market now sits near 55¢, suggesting they saw clear value before the move.
$10,932 on Sloane Stephens
10-wallet Kalinina cluster
Surface this because 10 wallets put $262.7k on the same side in a live sports market, and this wallet is a large profitable serial cross-market bettor entering Anhelina at 58¢ before a major volume surge.
- 10 wallets piled into Anhelina Kalinina with $262.7k total, a strong one-sided signal on this match.
- This wallet has nearly 1,000 resolved bets and is up about $450k lifetime, showing real experience even with a moderate 55% hit rate.
- The market saw a 45.7x volume spike, and this bettor got in at 58¢, well above the current 38¢ market move.
$5,084 on Anhelina Kalinina | Wallet win rate: 55%
Top Holders
- 0x5d58...9a15 — Outcome 46888277, $630,406 (90% win rate)
- 0x5c3a...020b — Outcome 47742031, $89,181 (55% win rate)
- 0xee61...debf — Outcome 47742031, $18,429 (50% win rate)
- 0x8a67...e403 — Outcome 46888277, $12,345 (85% win rate)
- 0xc0fd...a0a9 — Outcome 47742031, $11,001 (64% win rate)
- 0x6b90...f361 — Outcome 46888277, $9,873 (43% win rate)
- 0x996a...e3cc — Outcome 47742031, $8,489 (100% win rate)
- 0x6832...831f — Outcome 46888277, $7,618
- 0x84ad...bfb7 — Outcome 46888277, $6,552
- 0x647e...dd9b — Outcome 47742031, $5,590 (86% win rate)
