The Chicago Cubs have placed right fielder Jason Heyward on the seven-day concussion disabled list and recalled right-hander Jen-Ho Tseng from Triple-A Iowa to start Tuesday's game against the Miami Marlins.
A five-time Gold Glove winner, Heyward banged his head against the right-field wall trying to rob Dexter Fowler of a game-ending homer at St. Louis on Sunday. Heyward sat out Monday's 14-2 win over Miami.
Tseng is filling in with Yu Darvish on the 10-day disabled list because of the flu. He is 0-4 with an 8.04 ERA in six starts for Iowa.
The Cubs held second baseman Javier Baez (tight groin) out of the lineup. They also recalled infielder David Bote and left-hander Rob Zastryzny while optioning right-hander Cory Mazzoni to Iowa.