He played in Major League Baseball for the Colorado Rockies, Chicago Cubs, Detroit Tigers, Atlanta Braves, Texas Rangers and Miami Marlins.

Jeff Baker was born on June 21, 1981, in Bad Kissingen, West Germany, while his father, U.S. Army Lieutenant Colonel (Ret.)

The family soon returned to the United States, and lived in El Paso, Texas, Phoenix, Arizona, and West Point, New York.

Baker began playing baseball while his father was stationed in the Middle East, namely the United Arab Emirates and Saudi Arabia.

Larry Baker was responsible for teaching his son the game, and coached him until Jeff graduated from Gar-Field High School in Dale City, Virginia.

Baker made his Major League debut in 2005, as the Opening Day third baseman for the Colorado Rockies, playing a total of 12 games.

After Nix failed to adapt to the major league level, Baker spent the remainder of the season platooning at second base with Clint Barmes and Omar Quintanilla.

On August 31, 2012, Baker was traded to the Atlanta Braves for a player to be named later, minor league pitcher Greg Ross.