Last night marked the first time in 51 years a player hit a walk-off homer in the same game that his brother homered.
On July 12, 1962, the Braves entered the 9th inning trailing the Cards 6-3. With one out, Tommie Aaron, pinch-hitting for Claude Raymond, went deep to close the gap to 2 runs. The Braves proceeded to load the bases for Bad Henry, who won the game with a homer to left.
Siblings have homered in the same inning six times, but before Saturday no pair of brothers had ever homered to tie and then win a game.
Thanks to Pepefreeus for bringing the knowledge.