Lemanczyk was a workhorse starter for the Blue Jays in their expansion years. His 13 wins in 1977 tied a record for a first-year expansion team. A dozen seasons later, Lemanczyk remained on the franchise record books for his 1977 totals for wild pitches, hits, and runs allowed. On April 24, 1979 against the Rangers, Lemanczyk threw the Blue Jays’ first one-hitter, on his way to an All-Star selection and a career-best 3.71 ERA. After his playing career, Lemanczyk became a player agent, and became engaged in acrimonious litigation with Dave Stieb.