This week the best golfers in the world head to Newtown Square, Pa., to compete in the PGA Championship . As one of the four majors in the sport, a single PGA Championship win can become the defining moment of a player’s career. But winning two? That immediately puts a player in some rarified air. Just 22 men have taken home multiple Wanamakers and plenty of legends stand among them. Below we break down the multi-time winners, and the group of players that could potentially join them with a second win this week. Multi-time winners of the PGA Championship 22 players have won at least two PGA Championships in their careers. Leading the way, as is the case with so many historic lists in the world of golf, are Walter Hagen and Jack Nicklaus, who have both won the tournament five times. Tiger Woods has four to his name, and three players—Gene Sarazen, Sam Snead and Brooks Koepka—have won it three times.…