Willie McCovey becomes first player to hit 2 homers an in inning twice
On June 27, 1977, Willie McCovey of the San Francisco Giants hits two home runs in one inning and becomes the all-time National League leader with 17 career grand slams. McCovey homered of Jack Billingham with one out made the score 8-4, 9 batters later McCovey hits a grandslam off reliever Joe Hoerner, he entered…