Lund turned pro in 1945–46 with the Boston Olympics of the Eastern Hockey League, a minor affiliate team of the Boston Bruins. He scored 33 points during the regular season and scored 15 points in 9 playoff games with the Olympics helping the team win a championship. Next season, Lund led the league in scoring with 92 points in 56 games. This helped him garner some fame as he was called up by the Boston Bruins in the National Hockey League to play in one playoff game. In 1947-48, Lund joined the Hershey Bears in the American Hockey League where his excellent play was rewarded with two playoff game appearances with the Boston Bruins.