On July 29, 1915, 41-year-old Honus Wagner becomes the oldest player in the history of the modern era to hit a grand slam. Wagner’s home run, an inside-the-park shot, helps Pittsburgh to an 8-2 victory over Brooklyn. Wagner’s record will stand until 1985, when 42-year-old Tony Perez belts a grand slam.
Boston Red Sox third baseman Jim Tabor slugs two grand slams in a 17-7 win over the Philadelphia A’s
July 4, 1939
June 3, 1987
April 25, 2014