On May 19, 1981, Bibby began a start against the Atlanta Braves by allowing a leadoff single to right to Terry Harper. From that point on, Bibby hurled the equivalent of a perfect game (but actually a one-hit game) by retiring the next 27 batters in a 5–0 victory. He also excelled at the plate that night by hitting a pair of doubles (to center off Phil Niekro in the fifth, to left off Rick Mahler in the sixth), driving in a run and scoring another.