Houser left Saturday's game against the Athletics with groin tightness, Curt Hogg of the Milwaukee Journal Sentinel reports.
Houser has dealt with tightness in his groin both early in the spring and also at the end of the 2022 campaign. He'll be reevaluated on Sunday to help determine his status going forward. If healthy, Houser is expected to pitch in the bullpen to begin the season.