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Kathy Witford
Sam Snead
Seve Ballesteros won over 90 international tournaments. He also won the World Match Play Championship 5 times and The Open Championship 3 times. In total he won around 100 major golf tournaments.
Steve Williams (Tiger Woods's former caddy). With Tiger, he won 13 majors tournaments.
The 1997 US PGA Championship.
Ali Abdullah-Ezzani has won 2 amateur Golf tournaments in the Sacramento tournament in 2005.
Jack Nicklaus
Tiger
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Fred Couples, as of the end of the 2012 PGA season, has won 1 major golf tournament. That tournament was The Masters in 1992. He also won The Player's Championship in 1996, which isn't one of the 4 major tournaments (The Masters, U.S. Open, British Open, and the PGA Championship), but is sometimes called the "fifth major".
Tiger Woods has won 70 PGA tournaments to date.