MESA (Interstat) — Max Hartman homered and drove in four runs as Washington State defeated San Diego State 14-4 on Sunday in Game 1 of a Mountain West Conference Baseball Championship doubleheader.

The Cougars (30-26) took an early lead, scoring twice in the first inning on a ground-rule double by Priest and a fielder’s choice. San Diego State (36-24) answered with solo homers from Jackson and Tyce Peterson, but Washington State broke open the game with a seven-run seventh inning. Hartman capped the rally with a three-run homer, and Ryan Skjonsby added a sacrifice fly.

Scott Rienguette threw 3 2/3 innings of hitless relief, striking out six. Dustin Robinson had two hits and two RBIs, Trevor Smith drove in three runs and Skjonsby finished with two hits and three RBIs. The Cougars outhit the Aztecs 14-5.

Washington State scored in five of seven innings, including a five-run fifth. Hartman also drew a bases-loaded walk in the second inning. San Diego State’s Farrell scored on a wild pitch in the fourth.