Fully healthy in 1982, he pitched well coming out of the bullpen. On October 3, 1982, in the last regular season game started by Dodgers ace Fernando Valenzuela, Forster yielded a seventh-inning, three-run homer to the San Francisco Giants' Joe Morgan which proved to be the winning margin in a 5-3 Giants win. The loss by the Dodgers propelled the Atlanta Braves to the 1982 National League West Division title. Forster became a free agent and signed with the Atlanta Braves for the 1983 season. He had an efficient three seasons, compiling an ERA of under 3.00 in each of those seasons.