Catcher Predict: "National Bank Open: Learner Tien vs. Ben Shelton" "National Bank Open: Learner Tien vs. Ben Shelton First Set O/U 8.5" Winning probability plummets by 34%

According to Catcher Predict monitoring, in the Polymarket prediction market for the event "National Bank Open: Learner Tien vs. Ben Shelton," the "Over" option in the sub-market "National Bank Open: Learner Tien vs. Ben Shelton First Set O/U 8.5" experienced a sharp fluctuation in winning probability, dropping from 84% an hour ago to the current 50% (a fluctuation of 34%). Please note the impact of related breaking news.