Kemp was hurt when he crashed into an outfield wall Sunday.
''I fought the wall and the wall won - as it usually does,'' Kemp said Tuesday. ''The wall is undefeated.''
Kemp is batting .200 with one home run and five RBIs in 20 games.
Cincinnati recalled outfielder Phillip Ervin from Triple-A Louisville.
More AP MLB: https://apnews.com/MLB and https://twitter.com/AP-Sports