The outfielder had surgery Thursday on his broken right jaw after being struck by a pitch. The team has not said how long he will be out, but he could miss the rest of the regular season.
Atlanta has a commanding lead in the NL East and hopes Heyward will recover in time for the playoffs.
“We lost a big piece, but teams lose that a lot of times,” manager Fredi Gonzalez said in St. Louis, where the Braves began a four-game series against the Cardinals. “We’ve got plenty of candidates.”