YAZ II or YAZ2 "Carl Yastrzemski’s Grandson Mike Makes Major League Debut ...The younger Yastrzemski, playing left field, ended the day 0 for 3 but reached base after being hit by a pitch and scored a run."

https://boston.cbslocal.com/2019/05/26/mike-yastrzemski-carl-grandson-mlb-debut-giants/