On May 27, 1934, at the Baker Bowl in Philadelphia, Dizzy Dean broke up a 2-2 tie with a solo shot in the tenth inning of a contest against the Phillies. The Redbirds tacked on two more runs and would go onto win the contest 5-2. Dizzy not only provided some home run heroics, he picked up his sixth win of the young season. He would go on to win a grand total of 30 games that year and to this day he is the last National League pitcher to accomplish the feat. While he was best known for what he did on the hill, Dean was no slouch at the plate he hit 8 dingers in his career and carried a .225 career average.
Check out the box score here: http://www.baseball-reference.com/boxes/PHI/PHI193405270.shtml