On July 6, 1973, At Jarry Park The Expos take two in a doubleheader with the Astros, 12 – 8 and 14 – 6. In the first game, John Boccabella becomes the 18th man to hit two home runs in one inning, he lead off the 6th inning with a solo shot and closed it with a Grandslam for Montreal Expos. Manager Gene Mauch, said of Boccabella” excerpts a quiet type of leadership over the pitching staff.”

Boccabella said, “It was just one of those things.” and added”I was kinda punchy and forgot that I hit them both in the same inning. I am more relaxed this year.” He will hit 7 home runs and drive in 46 runs, both career highs. His .233 average is the second highest in any season with over 100 at bats.