Dotchin, 20, skated in 63 games with the Barrie Colts of the Ontario Hockey League during the 2013-14 regular season, posting 11 goals and 36 points. He led the Colts for penalty minutes with 121 and was third with a plus-22 rating. He ranked second among defensemen on Barrie for power-play goals with six and first for shorthanded goals with two. The Cambridge, Ontario native has also appeared in 11 playoff games for the Colts, recording three goals and five points.

The 6-foot-3, 209-pound defenseman has played in 193 career OHL games over his three year junior career, collecting 18 goals and 77 points to go along with 279 penalty minutes. Dotchin set career-highs in 2013-14 for goals (11), assists (25) and points (36).

Dotchin was selected by the Lightning in the sixth round, 161st overall, at the 2012 NHL Draft.