The Washington Nationals placed outfielder Jayson Werth on the 15-day disabled list with a strained right hamstring on Saturday.
Washington will also be without outfielder Bryce Harper on Saturday after having an ingrown toenail removed. He also missed Friday's game because of the procedure.
The Nationals recalled outfielder Eury Perez to take Werth's spot on the roster.
Werth, 33, has not played since May 2. He is batting .260 with four home runs.
Tyler Moore, Denard Span and Roger Bernadina will start in the outfield Saturday against the Chicago Cubs.