 Before the 1940 season, Berres was traded by Pittsburgh to the Boston Bees in exchange for Lopez.He played in part of two seasons with the Boston franchise, including their first year as the Braves in , when he appeared in a career-high 120 games while hitting .201 (56-for-279); he also led the NL in fielding percentage with a .995 mark.After backing up a series of Giants catchers for four seasons, he finished his career with that team in .