Catcher Predict: "US Open ATP: Alexander Zverev vs. Karen Khachanov" "US Open ATP: Alexander Zverev vs. Karen Khachanov First Set O/U 8.5" Winning probability plummets 16%

According to Catcher Predict monitoring, in the market prediction on Polymarket for the event "US Open ATP: Alexander Zverev vs. Karen Khachanov," the sub-market "US Open ATP: Alexander Zverev vs. Karen Khachanov First Set O/U 8.5" has seen a drastic fluctuation in the "Over" option's win rate, plummeting from 82.5% an hour ago to the current 66.5% (a fluctuation of 16%). Please note the impact of related breaking news.