Kolesar, 16, who had played in all 26 previous games, did not register a point in the 6-3 win over Victoria. The right wing who will play for Team West at the 2014 World Under-17 Hockey Challenge beginning in late December, has one goal and three assists this year for Seattle.
Spencer, 17, joins the Thunderbirds from the Minnesota NW team in the Upper Midwest High School Elite team. With Minnesota NW, Spencer had posted four goals and six assists in 21 games, he also had 30 penalty minutes. In 2012-13, Spencer played for Champlin Park High School in Minnesota and finished with seven goals and 13 assists in 25 games.
Seattle forward Justin Hickman is set to return Saturday, as the T-Birds travel to Portland to face the WHL champion Winterhawks, already 0-2 to start the season.
Seattle goalie Danny Mumaugh stopped 31 shots to get the shutout and his first win of the year.
The Calgary Hitmen won a hard-fought game 4-3 over the Seattle Thunderbirds in overtime Saturday night at ShoWare Center.
The Winterhawks took a 3-2 lead in the second period and never looked back.