The Cubs have placed shortstop Addison Russell on the 10-day disabled list retroactive to Aug. 2 because of a strained right foot.
Russell is batting .241 with 10 homers and 36 RBI. The Cubs announced the move before Friday's game against the NL East-leading Nationals.
Chicago also called up left-handed pitcher Rob Zastryzny from Triple-A Iowa. Zastryzny made one appearance for the Cubs in May and pitched in eight games for them last season.