Rory McIlroy keen to pick up his game after 'shooting himself in the foot'

Rory McIlroy insisted he can't afford to shoot himself in the foot again after he squandered a great start and ended the opening day five shots behind leaders Kevin Kisner and Thorbjorn Olesen in the US PGA, writes Brian Keogh.

The world No 4 raced to within two shots early pace-setter Olesen on two under par with eight holes to play at a punishing Quail Hollow but dropped three shots coming home and signed for a 72 that leaves him tied for 33rd with career Grand Slam chasing Jordan Spieth on one-over par.