Catcher Predict reported two sharp Polymarket moves: Swiatek’s first-set winning probability against Rybakina fell from 87% to 50.5%, a 36.5% fluctuation, while the Milwaukee Brewers’ option in the Braves-Brewers Spread -1.5 market rose from 31.5% to 81.5%, a 50% fluctuation. The monitoring did not identify the related breaking news that may have affected either market.