The Portland Winterhawks scored three times in the first 10 minutes Wednesday night, but could not hold off a hard-charging Medicine Hat squad, which rallied to a 6-5 win in overtime.
The Tigers scored five goals in the second period in the comeback, then netted the game-winner in the final minute of overtime to spoil the Winterhawks home game.
Medicine Hat finished with a 49-29 edge in shots, and Liam Ruck led the team with a hat trick.
Jordan Duguay had a goal and an assist for Portland.
Portland hosts first-place Spokane in back-to-back games Friday and Saturday at Memorial Coliseum.