Yastrzemski is out of the lineup for Wednesday's game against the Marlins.
The left-handed-hitting Yastrzemski often sits against lefties, but he'll head to the bench Wednesday while a right-hander (Eury Perez) takes the hill for the Marlins. Yastrzemski will give up his spot in the lineup to Sean Murphy, who will start behind the plate while Drake Baldwin gets a day off from catching but serves as Atlanta's designated hitter.