Answer
Yes, Lee Trevino has won the PGA Championship. He won it twice, in 1968 and 1971. In 1968, he won by a single stroke over Jack Nicklaus. In 1971, he won by a single stroke over Tom Weiskopf. Trevino is one of only five golfers to have won the PGA Championship twice. The others are Jack Nicklaus, Tiger Woods, Ben Hogan, and Walter Hagen.