Roberto Clemente aches. That's a good sign. "It has to happen," says the MVP. "If it doesn't, that means you're not working hard enough. [...] I play when I ache. Sometimes I tell somebody I ache. I'm not complaining. I'm just telling 'em how I feel."

As paraphrased and quoted in "Looks Like Good Season; Clemente's Back Aches" by Charley Feeney, in The Pittsburgh Post-Gazette (Saturday, March 4, 1967), p. 12 - Baseball-related