The MIBR option in Polymarket’s prediction market for the Valorant: MIBR vs Team Envy - VCT Americas Stage 2 Last Chance Qualifier event rose to a 90% win rate from 50% an hour earlier. The 40-percentage-point fluctuation occurred in the sub-market Map 3 Round Spread: MIBR (-3.5) vs Team Envy (+3.5), according to Catcher Predict monitoring. No specific breaking-news event was identified as the cause, but such a sharp repricing may reflect new information or shifting market sentiment.