Thomas had 32 points (12 goals, 20 assists) in 21 playoff games, helping his Hamilton Bulldogs to an OHL Championship on Sunday after a 5-4 victory in Game 6 against the Sault Ste. Marie Greyhounds.
Previous winners of the Wayne Gretzky '99' Award include Mitch Marner, Connor McDavid, Robby Fabbri, Taylor Hall and Corey Perry.
Thomas had seven points in the Championship Series.
Thomas is a first-round pick of the Blues (No. 20 overall) in 2017 and is the first Bulldogs player to win the award since the franchise relocated from Belleville. He will now compete for the Memorial Cup and could eventually face the Acadie-Bathurst Titans and Blues goalie prospect Evan Fitzpatrick, who is 16-4 in the playoffs with a 2.10 goals-against average, a .925 save-percentage and two shutouts.
