''The right-handed defenseman was one of many OHL draft-eligible players that were affected by the missed season, but he did manage to play 10 games in a prospect showcase tournament held at the beginning of June. He is a modern-day shutdown defenseman, with the size and mobility to be effective in his own end, but the skill and instincts to move the puck up ice when needed. In 2019-20, Mast recorded 11 points in 58 games for the Sarnia Sting and plans on returning to the team for the upcoming season.''
''A physically gifted and intelligent defender, many heralded the pick as a steal I have to agree. As the season went on, Mast impressed and became not just a complimentary piece in Sarnia but was a focal point on defence. His current general manager Dylan Seca labels him an excellent student. Very dedicated player. He watches a lot of video. Intelligent person and hockey player.''