Chicago Cubs history unpacked — July 3

Free of charge for the discerning reader.

Happy birthday to Codi Heuer, and a mighty host of others.

Today in baseball history, in 1966 – Pitcher Tony Cloninger hits two grand slams and drives in nine runs, as the Braves rout the Giants at Candlestick Park, 17-3. Cloninger is the first National League player to slam two in a game, and the first pitcher ever, and his nine RBIs are a major-league record for pitchers, breaking Vic Raschi's mark of seven, and other stories as well.