Jason Giambi belted a three-run, game-winning 4, in the opener of a three-game series.

Carlos Gonzalez drove home Dexter Fowler with a game-tying double earlier in the frame. Marlins manager Jack McKeon -- in his 2,000th major-league game at the helm -- elected to walk Troy Tulowitzki to get to Giambi.

Leo Nunez (1-3) was charged with the loss, although Randy Choate surrendered the deciding homer to Giambi.

Matt Belisle (7-4) threw 1 2/3 scoreless innings of relief to earn the win for the Rockies, who opened their nine-game homestand in dramatic fashion.