July 25, 1956: Roberto Clemente hits an inside-the-park, walk-off grand slam to lift Pirates – Society for American Baseball Research

Exhibit honoring Roberto Clemente's 3,000th hit at center of celebration of Pirates legend

Roberto Clemente Was An Outstanding Human Being

Jimmy T on X: On this date (July 25) in 1956, Roberto Clemente became the only MLB player to hit a walkoff, inside-the-park grand slam in a 9–8 @ Pirates win over the @

Roberto Clemente Was An Outstanding Human Being

Roberto Clemente impact is still felt 50 years after his tragic death

Roberto Clemente: Remembering the Pirates Hall of Famer 50 years after his death – WHIO TV 7 and WHIO Radio

Roberto Clemente Was An Outstanding Human Being

Clemente, Roberto Baseball Hall of Fame

Exhibit honoring Roberto Clemente's 3,000th hit at center of celebration of Pirates legend

Remembering the Life and Legacy of Roberto Clemente

Walk off inside the park homeruns