The Athletics placed Gelof on the 10-day injured list Thursday with a right hand contusion.
Gelof suffered a laceration and contusion when he got his hand stepped on in Tuesday's contest in San Francisco. The injury had seemed relatively minor initially, but Gelof ultimately was unable to avoid the IL. Max Muncy has seen a dip in playing time lately, but he should be back in the lineup on a regular basis while Gelof is sidelined.