By DOUG FERGUSON
AP Golf Writer
Phil Mickelson is out of the PGA Championship. The defending champion has withdrawn from Southern Hills next week. The PGA of America announced his withdrawal on social media. Mickelson has not been heard from for three months. That follows his incendiary comments about a Saudi-funded rival league he supports and accusing the PGA Tour of being greedy. Mickelson made history last year at Kiawah Island by becoming golf’s oldest major champion at age 50 when he won the PGA. He is the first PGA champion not to defend since an injured Tiger Woods in 2008.