Polymarket pricing for the "Miami Marlins vs. Cincinnati Reds" event swung sharply, with the implied win rate for the "Over" option in the "O/U 8.5" sub-market falling to 11.5% from 44.5% an hour earlier, according to Catcher Predict monitoring. The 33% move points to a rapid repricing in the prediction market, where traders buy and sell outcomes as new information changes perceived probabilities. Catcher Predict said market participants should watch for related breaking news that could be driving the shift.