The main MLB team that Jason Giambi played for professionally is the Oakland Athletics. Another of the teams that Jason Giambi played for is the Colorado Rockies.
MLB player Jason Giambi bats left.
MLB player Jason Giambi weighs 240 pounds.
MLB player Jason Giambi made $1000000 in the 2014 season.
Jason Kipnis plays for the Cleveland Indians.
Jason Frasor plays for the Texas Rangers.
Jason Rogers plays for the Milwaukee Brewers.
Jason Heyward plays for the Atlanta Braves.
Jason Grilli plays for the Los Angeles Angels.
Jason Motte plays for the St. Louis Cardinals.
The New York Mets...
Starlin Castro plays for the Chicago Cubs.