Boston Red Sox Photos: Carl Yastrzemski Throws First Pitch To Grandson Mike.

Red Sox legend Carl Yastrzemski threw out a ceremonial first pitch at Fenway Park on Wednesday night to his grandson, Mike Yastrzemski, currently an outfielder on the San Francisco Giants. A day before meeting on the field for the pitch, the two Yastrzemski’s took part in an interview for MLB Network with host Peter Gammons.