The league kept the number of games on the schedule at 36 for the 2009–10 season. High1 lost in the semi-finals of the Korea Domestic Championship to Korea University. At the midpoint of the season, High1 was sitting in the middle of the rankings. However, they ranked second in goals scored. At the end of the regular season, High1 finished in fourth place with 60 points. They scored 150 goals while allowing 130 goals and won their season series against the China Dragon and Tohoku Free Blades and lost their series against the Cranes and Eagles. In contrast to the middle of the season when High1 had seven players in the top ten points ranking, they finished with only two players in the top ten. Alex Kim and Tim Smith tied for first place with 75 points. Kim also led the team in goals with 29, while Smith led the team in assists with 48. Kim also led the team in plus-minus with +50. High1 scored the lowest number of shorthanded goals, with only 2. The team played ten of their 18 home games in Goyang. Advancing to the playoffs, they faced Korean rival Halla in the semi-finals. Although they won the first game in Anyang, they lost three straight to be knocked out of the playoffs.