Keith is out of the lineup for Wednesday's game against the Athletics.
The Tigers will send Keith and fellow left-handed hitters Kerry Carpenter and James Outman to the bench while southpaw Jeffrey Springs takes the hill for the Athletics. Detroit manager A.J. Hinch has shielded Keith from same-handed pitching throughout the season, with the 24-year-old logging just 17 of his 260 plate appearances against lefties.