I've been trying to track down the exact wording of a quote by John McEnroe. The earliest and therefore arguably most accurate reference I've found is from 1993: "Is golf a sport? I thought in sports you had to at least run at some point." Source: Dan Cahill and Mark Gaffney, "Sox Rate Increase in WGN Viewership," Chicago Sun-Times, August 27, 1993, p. 109.