Home / Prediction Markets / Sports / Tsitsipas vs Merida Aguilar Prediction May 4 Tsitsipas vs Merida Aguilar Prediction May 4 View on Polymarket → Share Market called it correctly Implied 100% at publication · Resolved YES · Brier score: 0.00 See full track record SS Steve Silverman Sport Expert Market Resolved Embed NEW Embed this market Full Compact Copy Published April 26, 2026 4 min read Resolution Verdict STEFANOS TSITSIPAS Market Resolved Tsitsipas: proven clay specialist returning to form in a favorable draw. Market probability: 79%. Resolved Volume $504.8K $206.1K in 24h Liquidity $32.1K Moderate depth Time Left Ended Resolves May 4 505K Vol. Ended 1H 6H 1D 1W 1M ALL Select lines to display Madrid Open: Stefanos Tsitsipas vs Daniel Merida Aguilar $490K Vol. 100% Buy Yes 100¢ Buy No 0¢ Madrid Open: Stefanos Tsitsipas vs Daniel Merida Aguilar Set Handicap +/-1.5 $5K Vol. 100% Buy Yes 100¢ Buy No 0¢ Madrid Open: Stefanos Tsitsipas vs Daniel Merida Aguilar Set 1 O/U 8.5 $346 Vol. 100% Buy Yes 100¢ Buy No 0¢ Madrid Open: Stefanos Tsitsipas vs Daniel Merida Aguilar Set 1 Winner $3K Vol. 100% Buy Yes 100¢ Buy No 0¢ Madrid Open: Stefanos Tsitsipas vs Daniel Merida Aguilar Set 1 O/U 9.5 $214 Vol. 100% Buy Yes 100¢ Buy No 0¢ Madrid Open: Stefanos Tsitsipas vs Daniel Merida Aguilar Match O/U 23.5 $239 Vol. 0% Buy Yes 0.1¢ Buy No 100¢ Largest Trade $41,000 SMCAOMCRL voted with: STEFANOS T Apr 28, 2026 at 6:57am Most Recent $32,861 KimiTalibantonelli voted STEFANOS T Apr 28, 2026 Trader Rank Amount Position Volume PnL ROI Time KimiTalibantonelli #1,829 $32,861 STEFANOS T $344.6K +$857 +0.2% Apr 28, 2026 SMCAOMCRL - $41,000 STEFANOS T $0 - - Apr 28, 2026 Bubano - $27,922 STEFANOS T $0 - - Apr 27, 2026 Stefanos Tsitsipas enters this Madrid Open clash carrying a 79% market probability of advancing past Daniel Merida Aguilar. That number surged hard on April 26, climbing more than 20 points in a single day. The market is not whispering here. It is shouting that Tsitsipas is the overwhelming favorite on clay in Madrid. These two players meet at the Mutua Madrid Open on red clay in Spain. The match is set to resolve by 2026-05-04 09:00:00. Tsitsipas checks in at 79% probability. Merida Aguilar sits at 21%. Total market volume stands at $29,160, signaling genuine trader conviction behind these numbers. How the Tsitsipas vs Merida Aguilar Matchup Resolves A Tsitsipas moneyline win means he advances in the Madrid Open draw. He has won this event before and knows the red clay surface in Madrid well. His game, built on a heavy kick serve, fluid footwork, and punishing forehand, plays best on slower clay courts. Tsitsipas: 79% probability. Former Madrid Open champion. Currently ranked 36th in the world.Merida Aguilar: 21% probability. Spanish player competing on home soil in Madrid. Merida Aguilar’s best path to an upset runs through errors. If Tsitsipas battles the lingering effects of his 2025 back injury and misfires on key points, the Spaniard can feed off the home crowd energy. Home soil advantage at a Masters 1000 event is real. Still, the gap in career experience and ranking makes that outcome a long shot. Market Signals and Form The momentum composite here is strong and directional. Tsitsipas’ probability surged more than 20% in 24 hours with a trend score pushing above 30. That kind of move in a single day reflects new information hitting the market fast, likely related to draw positioning, fitness reports, or Tsitsipas’ clay results earlier in the Madrid draw. Total volume of $29,160 with $28,759 traded in the last 24 hours tells one story clearly. Nearly all of this market’s liquidity moved in a single day. Liquidity depth sits at $202,231, which confirms traders are not just dabbling here. Real conviction backs the Tsitsipas side. Secondary markets include set handicap and totals lines, with match totals set at 21.5, 22.5, and 23.5 games available as alternative markets in the UI. Sponsored Partner Lines Analysis: Tsitsipas as the Madrid Clay Favorite Tsitsipas spent much of 2025 managing a back injury that forced him out of multiple events. He reunited with his father Apostolos as coach heading into 2026. He came into the clay swing targeting a full comeback. The Madrid surface suits his style, and a deep run here would validate his entire offseason work. Merida Aguilar represents the underdog story every Grand Slam-level event produces. A Spanish player on home clay at the Madrid Open carries symbolic weight. The crowd will back him. If Tsitsipas’ back flares up early or he faces a slow first set, Merida Aguilar has the opportunity to steal momentum. Signals to Monitor: Tsitsipas serve percentage: His heavy kick serve is the foundation of his clay game. A high first-serve percentage closes out matches fast.Back injury indicators: Tsitsipas cited back pain through much of 2025. Watch warmup reports and early movement patterns.Merida Aguilar first-set aggressiveness: If he wins Set 1, his 21% probability becomes more relevant immediately.Set 1 total games: Markets offer Set 1 over/under at 8.5, 9.5, and 10.5. A tight first set extends Merida Aguilar’s window.Volume confirmation: The $28,759 in 24h volume concentrated on Tsitsipas. Any reversal spike warrants attention before match time. The $29,160 in total market capital aligns tightly with the probability reading. Traders moved decisively toward Tsitsipas, and there is no meaningful counter-signal in the current market data. LINES VERDICT Stefanos Tsitsipas Tsitsipas holds every structural advantage on Madrid clay and the market confirms it with authority. Merida Aguilar is a tough home draw but not a match-level threat against an experienced clay specialist returning to form. Frequently Asked QuestionsWho is favored in this match?Tsitsipas is the heavy favorite at 79% implied probability. Merida Aguilar checks in at 21%. The market moved sharply toward Tsitsipas on April 26, with a 20-point single-day jump.What does the set handicap mean?The set handicap at plus or minus 1.5 sets means Merida Aguilar would need to win at least two sets to cover. In a best-of-three match, that requires him to win the match outright.When does this match take place?The match resolves by 2026-05-04 09:00:00. The Mutua Madrid Open runs April 20 through May 3, 2026 on red clay in Madrid, Spain.What is the over/under total for this match?Multiple match totals are available: 21.5, 22.5, and 23.5 total games. Set 1 totals are also offered at 8.5, 9.5, and 10.5 games.Where can I follow this market?This market trades on Polymarket with $202,231 in liquidity depth. Total market volume stands at $29,160 with nearly all of it entering in the last 24 hours.How is the Smart Money Index calculated?We aggregate the live positions of the top 50 Polymarket whales (ranked by 30-day tracked volume) into one composite reading per market. It refreshes every hour. The percentage shows how many of those whales hold YES versus NO; the net dollar position shows the cohort's directional exposure in dollars.What is a convergence signal?A convergence event fires when three or more tracked wallets buy the same outcome on the same market within a four-hour window. We surface these in the activity feed and the VIP digest.Is Lines a market operator?No. Lines is an editorial and data product. We do not operate prediction markets, custody funds, or accept trades. All trade flows deep-link to Polymarket via our affiliate code. Probabilities shown are market-implied and not predictions or recommendations. Market Resolved Outcome: YES Final Price 100% Settled May 4, 2026 Duration 8 days Resolution Analysis Tsitsipas Dominates on Clay Tsitsipas' kick serve and heavy forehand take control early. He wins comfortably in straight sets, validating the 79% market read. His fitness holds and the back injury becomes a non-factor on the Madrid clay surface. Back Injury Slows Tsitsipas If Tsitsipas' back stiffens in a long first set, his movement breaks down. Merida Aguilar feeds off the home crowd and extends the match. A third set becomes a live scenario and the 21% underdog suddenly has real equity. Merida Aguilar Steals Set One Merida Aguilar takes an early lead by winning Set 1. The Madrid crowd lifts him. Tsitsipas resets and uses his clay experience to take Sets 2 and 3. The match goes three sets but Tsitsipas closes it out on experience alone. Match Suspended or Retired Weather or a Tsitsipas injury forces a late suspension or retirement. Madrid spring clay events carry weather risk. Any retirement scenario reshapes all related prop markets including set totals and set handicap lines instantly. Key macro factor: Tsitsipas targeting full 2026 clay season comeback after back injury derailed 2025. Madrid represents a key confidence benchmark. 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