Detroit Tigers catcher Alex Avila has been slowed by headaches during his minor league rehab assignment while trying to recover from a concussion.
Avila left Thursday's game for Class AAA Toledo after going 0-for-2 and catching the first three innings. He was then held out of Friday's game as a precautionary measure. The team hopes Avila will be able to serve as designated hitter for Saturday's game.
"You just take it slow for a day and then see how it plays out, and we'll get him back into action," Tigers manager Jim Leyland told MLB.com.
Avila is batting just .198 with a .288 on-base percentage, nine home runs and 36 RBI in 73 games this season.
Brayan Pena and Bryan Holaday have been catching games for the Tigers with Avila out. Victor Martinez made his first start at catcher in two years Friday.