Willie McCovey’s 17th Grand Slam
- Milestones & Records
Willie McCovey becomes NL all-time grand slam leader with his 17th
Giants 14, Reds 9 in Cincinnati
June 27, 1977: Willie McCovey hits two home runs in this game. He hits the grand slam in T6 off Joe Hoerner. McCovey will end up hitting 18 career grand slams. He hits his last grand slam on 8/1/77 in Montreal in T3 or Wayne Twitchell. He was inducted into the National Baseball Hall of Fame in 1986.