http://www.denverpost.com/rockies/ci_8969507 22 Innings! I think the most surprising thing was that both catchers stayed in the whole game. Or that the winning run scored on a walk. They had a seventh inning stretch three different times. It lasted 6 hours, 16 minutes, and finally ended at 1:21 in the morning.
Those people that went to the game and stayed must have been pissed, 22 innings to watch your team lose.