On WMAQ, Hal Totten, a Chicago Daily News play-by-play reporter, does a play-by-play radio report of the 12-1 Cubs' victory over the Cardinals. It will be the first broadcast of every Cub and White Sox home game of the season, marking the first time a team's games have been on the airwaves on a regular basis.
At Busch Stadium, Hank Aaron hits the first of his 755 career home runs in his seventh major league game. The Milwaukee outfielder's sixth-inning solo round-tripper is hit on a pitch thrown by Cardinal right-hander Vic Raschi in the Braves' 7-6 extra-inning victory in St. Louis.
Fernando Tatis becomes the only player in major league history to hit two grand slams in the same game in one inning. The Cardinal third baseman hits both off Dodger starter Chan Ho Park in an 11-run third, setting the major league mark. The third baseman's eight RBIs in one inning also breaks the old record of six.