In 1957, Jack played 47 games for Montreal, qualifying his name to be engraved on the cup, but he was sent to the minors before the playoffs started so his name was left off the cup. The remainder of his career was spent in the Quebec Senior Hockey League, American Hockey League and Eastern Hockey League. LeClair died on June 14, 2011.
In 1957, Jack's professional hockey career gained momentum when he played 47 games for Montreal, earning him a spot on the championship trophy. However, his time with the team was cut short when he was reassigned to the minors before the postseason started, leaving his name off the trophy. The rest of his career was spent playing in various leagues, including the Quebec Senior Hockey League, American Hockey League, and Eastern Hockey League. LeClair's life came to an end on June 14, 2011.