Thomas, 24, skated in 56 games for the Syracuse Crunch during the 2019-20 regular season, collecting three goals and 16 points to go along with 22 penalty minutes. The Calgary, Alberta native ranked tied for third among Crunch defensemen for points.
The 6-foot-1, 183-pound defenseman has played in 274 career AHL games, all with Syracuse over the past five seasons, collecting 13 goals and 79 points to go along with 134 penalty minutes. He posted career highs for goals (four) and points (22) during the 2017-18 season. Thomas has also skated in 29 Calder Cup Playoff games for the Crunch, recording five goals and 13 points.
Thomas was originally drafted by the Lightning in the fourth round, 119th overall, at the 2014 NHL Draft.