The 2025 Sinquefield starts on August 18 and ends on August 28. Format is a single round-robin with tiebreaks handling ties for the first place. Time control is classical (90 minutes for the first 40 moves, followed by 30 more minutes for the rest of the game, plus a 30-second increment starting from move one).

Last time it was won by Alireza Firouzja.

Event info & games: https://www.chess.com/events/2025-gct-sinquefield-cup