The Athletics placed Gelof (hand) on the 10-day injured list Thursday.
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 had seen a dip in playing time lately, but he should be back in the lineup on a regular basis while Gelof is sidelined.