 In his two-season MLB career, Connolly posted a 6–12 record with 118 strikeouts and a 5.88 ERA in 42 appearances, including 19 starts, one complete game, one shutout, and 130 innings of work.He allowed 143 hits and 98 bases on balls.His shutout came on September 15, 1964, against the Kansas City Athletics at Fenway Park, a two-hit, 8–0 win in which Connolly fanned 12 hitters.