IEM Cologne Major CS2 2026: Day 1 Upsets — THUNDERdOWNUNDER Stuns MIBR, Sharks Topple Heroic
June 2 saw IEM Cologne Major CS2 2026 kick off — the biggest major of the year with a $1.25M prize pool. Day 1 delivered massive upsets: THUNDERdOWNUNDER demolished MIBR 13-6, and Sharks upset Heroic. Swiss format, 32 teams, three wins to advance.