Rory McIlroy out of Bridgestone Invitational defence though injury

Rory McIlroy celebrates his 2014 success in the WGC-Bridgestone Invitational
Defending champion Rory McIlroy is out of the WGC-Bridgestone Invitational

Doubts over Rory McIlroy playing in the US PGA have increased after the injured world number one withdrew from next week's WGC-Bridgestone Invitational.

The Northern Irishman. who ruptured an ankle ligament earlier this month, is the defending champion in both events.

Medical experts suggested the 26-year-old could face three months out and he confirmed on Wednesday that he would not compete at Firestone Country Club.

The year's fourth and final major is held a week later at Whistling Straits.

McIlroy sustained a "total rupture" of the anterior talofibular ligament in his left ankle while playing football with friends on 4 July.

The four-time major winner was forced to miss the Scottish Open and the defence of his Open title at St Andrews.

"Unfortunately, I will not be defending my World Golf Championships-Bridgestone Invitational title," McIlroy said in a statement from tournament organisers on Wednesday.

"Best of luck to all the competitors and I look forward to returning to Firestone in 2016."

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