$10,000 parlay (2 legs) — ATP Challenger Valencia, Spain Men Singles

Alejandro Tabilo tracked on tail.bet across four high-roller positions totaling $52,339 wagered. The two settled bets both won, though the average position underperformed relative to stake, generating a negative 39.6% ROI despite the perfect win rate. The largest captured bet was a $17,012 single on a match against Ethan Quinn, which won but returned only $7,518, illustrating the compressed odds typical of heavily backed favorites in tennis markets.