From 1927 to 1930, he played summer baseball in the Cape Cod Baseball League (CCBL). Connell played catcher for the CCBL's Falmouth team from 1927 to 1929, clobbering home runs in three consecutive games in 1928, and helping the team to the league pennant in 1929.[2][3][4] He returned to the league in 1930 to play for that season's pennant-winning Wareham team.[5][6] An all-league CCBL selection at catcher, it was reported that Connell "has all the requirements for a big league catcher and is at all times a steady, dependable player who has a pleasing personality to add to his ability as a ball player."[7]
Connell made his major league debut in 1931, and played in six games at catcher for the Phillies during that season. His first appearance came on July 4 when he entered as a late-inning replacement for Phillies catcher Spud Davis in the second game of a doubleheader against the Boston Braves at Braves Field.[8] Connell's first hit came one week later against the New York Giants at the Baker Bowl, when he singled off New York's Clarence Mitchell.[9] On September 14, he singled and scored a run against the eventual World Series champion St. Louis Cardinals and pitcher Allyn Stout at Sportsman's Park. The Cardinals, who boasted a lineup that included Baseball Hall of FamersJim Bottomley, Chick Hafey, and Frankie Frisch, prevailed over the Phils, 13–5.[10] Connell's final major league appearance was also his only major league start. It came on September 27, when he caught Phils hurler Bob Adams and got a hit off Ben Cantwell in Philadelphia's 12–2 drubbing at the hands of the Braves in Boston.[11] In 12 major league at-bats, Connell recorded three hits and scored one run. He never made an error behind the plate.[12]