As paraphrased and quoted in "The Scoreboard: Clemente's Only Regret? One Pennant" by Les Biederman, in The Pittsburgh Press (Sunday, March 31, 1968), Sec. 4, Pg. 3
Baseball-related, <big><big>1960s</big></big>, <big>1968</big>
Context: The best advice and most help he ever received came from Buster Clarkson, an American player, when he was in Puerto Rico."I played for his team and I was just a kid," Clemente recalled. "He insisted the other players allow me to take batting practice and he helped me. He put a bat behind my foot and made sure I didn't drag my foot. Willie Mays also helped me. He told me not to allow the pitchers to show me up. He suggested I get mean and if the pitchers knocked me down, get up and hit the ball. Show them."