Mlb Extra Innings Records 2025. The most extra innings played in professional baseball is 24 by rochester at pawtucket in the international league on april 18, 1981. The modified extra innings rule is expected to reduce innings beyond the 10th by 53%.

That’s a rate of 8.9%, about 1.8% — or 43 games — higher than this year’s. Extra innings send a fan’s excitement to another level, and add pressure to players and fans alike.