McLain started at shortstop and went 1-for-3 with a walk and a two-run home run in Saturday's 6-5 loss to St. Louis.
McLain launched his sixth home run of the season in the fourth inning, giving Cincinnati a 5-3 lead. He's started at shortstop in four of five games since Elly De La Cruz (hamstring) landed on the injured list. Edwin Arroyo started the other contest. De La Cruz has begun light baseball activity and will undergo an MRI checkup June 12, and he appears headed for a relatively brief IL stint.