Manager Brandon Hyde said Hays has a "pretty bad" laceration on the back of his left hand from being cleated in Thursday's win over the Cardinals, Roch Kubatko of MASNSports.com reports.
Hays was examined after taking a cleat to the hand Thursday, but he was able to remain in the game and ultimately went 0-for-4 with a strikeout. The 26-year-old will be further evaluated prior to Friday's series opener in Detroit, but Chris Owings and Tyler Nevin could see increased at-bats if Hays is forced to miss time.