The Cubs swept a doubleheader from the St. Louis Cardinals 5-1 and 16-11 in front of 40,222 fans at Wrigley Field. In the opener, Dick Ellsworth threw a complete game and earned his fifteenth win of the season. Ellsworth allowed only one run while striking out ten Cardinals’ batters. Cubs’ back-up catcher Jimmie Schaffer hit a two-run home run to cap the Cubs’ victory. In the afternoon game, Lou Brock hit a home run off of the St. Louis Cardinals’ starter Ernie Broglio to give the Cubs a two-run lead. Broglio lasted only one inning in this wild contest, but he did not lose the game since Cubs’ starter Glen Hobbie also surrendered four runs. In a see-saw affair that saw five lead changes, the Cubs’ offensive spark came from Brock who collected three hits and drove in five runs. Catcher Merritt Ranew added three hits while Ron Santo, Billy Williams, and Andre Rodgers each had two hits. Along with Brock, Williams and Schaffer each hit homeruns to power the Cubs’ sixteen hit outburst. The following season, the Cubs traded Brock to the Cardinals in the infamous Brock for Broglio deal.