Veterans Matt Holliday and Jason Giambi celebrate after a Giambi home run

Nicknamed 'The Gladiator' by manager Jim Tracy, Jason Giambi provided an unexpected late-season lift for the Rockies

4. Frank Thomas

...runs with 143 runs batted in and a .328 batting average. That award was given to Jason Giambi, who later was implicated as a steroid user. Without question, Thomas is the greatest hitter in...

Oakland Athletics' Jason Giambi is shown against the Kansas City Royals in a spring training baseball game in Phoenix, Tuesday...

Mar. 14, 2009; Phoenix, AZ, USA; Oakland Athletics first baseman Jason Giambi rounds the bases after hitting a two run home run in the first inning against the...

Oakland Athletics' Jason Giambi waves to fans in the sixth inning of a spring training baseball game against the Los...

New York Yankees' Jason Giambi runs the bases after hitting a solo home run to right field against the Seattle Mariners...

CAPTION: Mar. 14, 2009; Phoenix, AZ, USA; Oakland Athletics first baseman Jason Giambi against the San Francisco Giants at Phoenix Municipal Stadium. Mandatory Credit: Mark J. Rebilas-US PRESSWIRE...

MESA, AZ - MARCH 03: Jason Giambi #16 of the Oakland Athletics waits on deck during the spring training game against the Chicago...

Mar. 14, 2009; Phoenix, AZ, USA; Oakland Athletics first baseman Jason Giambi in the dugout prior to the game against the San Francisco Giants at Phoenix Municipal Stadium...

Oakland Athletics' Jason Giambi poses for a photograph after speaking at a news conference in Oakland, Calif., Wednesday, Jan. 7...

Oakland Athletics' Jason Giambi poses for a photograph after speaking at a news conference in Oakland, Calif., Wednesday, Jan. 7...

OAKLAND, UNITED STATES: Oakland Athletics Jason Giambi hits a double in the second inning scoring a run against the Los Angeles Dodgers 13...

The 2005 Yankees' Opening Day starting lineup - SP - Randy Johnson C - Jorge Posada 1B - Jason Giambi 2B - Tony Womack 3B - Alex Rodriguez SS - Derek Jeter LF - Hideki Matsui CF - Bernie Williams RF...

...been linked to performance-enhancing drugs in recent years includes, Jose Canseco, Barry Bonds, Mark McGwire, Jason Giambi, Gary Sheffield, and the late Ken Caminiti.The release of the Mitchell Report comes less than...