He entered the majors in 1969 with the Atlanta Braves, playing with them four years before joining the Detroit Tigers (1973) and Boston Red Sox (1974). In his rookie season, Didier appeared in a career-high 114 games, helping his team win the National League West Division title. At the end of the season, he finished fourth in the Rookie of the Year vote (behind Ted Sizemore, Coco Laboy and Al Oliver and over Larry Hisle) and also was named to the 1969 Topps All-Star Rookie Roster. After that, he suffered arm and back problems and played only in 133 games over the next five seasons. While in Atlanta, he became the preferred catcher of knuckleballer Phil Niekro.
