Roger Connor hits first grand slam in MLB history on September 10

On September 10, 1881, Roger Connor of the Troy Trojans recorded the first grand slam in Major League Baseball history. He achieved this during a dramatic walk-off game, securing an 8-7 victory over Worcester. Several other significant sports milestones occurred on this date throughout history, including the establishment of the first East-West All-Star Game of Black baseball in 1933 and Mickey Mantle hitting his 400th home run in 1962. These events highlight September 10 as a notable date in sports history.

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• 9:52 PMYahoo Sports — Today in sports history, September 10