Baker was drafted by the Atlanta Braves in the 1967 amateur draft out of Del Campo High School near Sacramento, California. Baker was inducted into the Sac-Joaquin Section's Hall of Fame class in 2010 for his play at Del Campo. He began his major league baseball career as an outfielder for the Braves in 1968. As a Brave, he earned a spot as a footnote in history. On April 8, 1974, he was on deck when Hank Aaron hit home run 715 to pass Babe Ruth in career home runs. He played for the Yaquis de Obregón of the Mexican Pacific League in the 70’s during the offseason, stating it was the toughest league he played in as a hitter.