Jason Giambi's Three-Home-Run Game, 2011

Jason Giambi hit three home runs in one game for the Colorado Rockies against the Philadelphia Phillies on May 19, 2011. The Colorado Rockies won 7–1.

The game was played at Citizens Bank Park in Philadelphia. The announced attendance was 45,425. The game took 2h 59m. It was a night game, at 64 degrees.

It was the only time Jason Giambi managed it. Kyle Kendrick started for the Philadelphia Phillies. Ed Rapuano umpired behind the plate. It is the third of nine three-home-run games the archive records that season.