Yastrzemski is out of the lineup for the first game of Wednesday's doubleheader with the Mets.
Lefty Sean Manaea is on the bump for the Mets for the first game of the day, so the left-handed-hitting Yastrzemski will retreat to the bench. Expect Yastrzemski to return to the starting nine for the nightcap, when right-hander Christian Scott will toe the rubber for New York.