Possible Clues:

• Golfer nicknamed 'Supermex'
• NI voter disrupted noted figure on course?
• He might recall playing one green
• Former NBC PGA analyst
• The Merry Mex of golf
• First golfer to win the U.S., British and Canadian Opens in the same year
• British Open winner of 1971 and 1972
• Two-time U.S. Open champ
• Lee, golfer