Nick Price won the PGA Championship twice during the 1990s. He won it in 1992 and again in 1994.
1 (PGA Championship)
1999 & 2000
Masters, U.S. Open, Open Championship, PGA Championship
Never, his best finish was 2nd in 1990.
Yes, they do. A major championship win carries a 5 year exemption on the PGA Tour, and the player may accept this. However, due to the huge amounts of money earned on the PGA Tour they will most likely turn pro, as amateurs can not collect winnings.
John Daly won the 1991 PGA Championship.
Bob Tway won the 1986 PGA Championship.
Bobby Nichols won the 1964 PGA Championship.