Hassell later walked as he finished the game at 1-for-3 with a strikeout.
Matt Cronin also appeared in the game and fortified his likelihood of going undrafted in either phase of the Rule 5 draft by allowing a run on two hits while retiring one of three batters faced while finishing the 7th inning.
The Rafters (14-12) rematch against the Javelinas (7-17) Monday night in Scottsdale.