Hall of Fame outfielder Carl “Yaz” Yastrzemski hit 237 of his 452 career home runs at Fenway Park during his legendary career with the Boston Red Sox.

On Thursday, Yaz’s grandson, San Francisco Giants outfielder Mike Yastrzemski, went yard for the 91st time in his career. It was the 33-year-old’s second time homering in Beantown, with the first instance coming in his Fenway Park debut as a rookie on Sept. 17, 2019.

San Francisco’s midweek series against Boston is only Mike’s third time playing against his grandfather’s old team and the first time since the Red Sox visited the Giants last July.