On July 11, 1950, St. Louis Cardinals second baseman Red Schoendienst powered the National League to a 4-3 win with a solo shot off of Detroit's Ted Gray in the 14th inning of the All Star game at Comiskey Park in Chicago. It was the first time an All Star game went into extra innings. The National League struck first with 2 runs in the 2nd, then the American League came back with a run in the 3rd then two more in the 5th to give them a 3-2 edge that would last until the 9th inning when Ralph Kiner of the Pittsburgh Pirates tied it with a long ball. Both pitching staffs were sharp as they held each other at bay until Schoendienst stepped to the dish to lead off the 14th, Schoendienst's shot landed in the left field stands giving his squad the edge. Ewell Blackwell pitched his third consecutive 1-2-3 inning in the bottom of the 14th to seal the deal for the National League.
Here's a link to a newspaper archive following the game: http://news.google.com/newspapers?id=D1pIAAAAIBAJ&sjid=Uk4DAAAAIBAJ&pg=4243%2C4035228
Here's the box score: http://www.baseball-reference.com/boxes/ALS/ALS195007110.shtml