McIlroy, Horan at BMW PGA pro-am

Niall Horan tees off during the Pro-Am ahead of the BMW PGA Championship at Wentworth on May 20, 2015 in Virginia Water, England. (Photo by Ian Walton/Getty Images)

Rory McIlroy of Northern Ireland poses with Niall Horan of One Direction, Paul Scholes (L) and Phil Neville (R) during the Pro-Am ahead of the BMW PGA Championship at Wentworth on May 20, 2015 in Virginia Water, England. (Photo by Ian Walton/Getty Images)

Niall Horan of One Direction signs an autograph during the Pro-Am ahead of the BMW PGA Championship at Wentworth on May 20, 2015 in Virginia Water, England. (Photo by Ian Walton/Getty Images)

Niall Horan of One Direction hits a shot during the Pro-Am ahead of the BMW PGA Championship at Wentworth on May 20, 2015 in Virginia Water, England. (Photo by Ian Walton/Getty Images)

One Direction singer Niall Horan chips onto the 9th green during the Pro-Am competition at Wentworth Golf Club in Surrey, England, on May 20, 2015, ahead of the May 21 PGA Championship. AFP PHOTO / GLYN KIRK (Photo credit should read GLYN KIRK/AFP/Getty Images)

Niall Horan of One Direction smiles after finishing his round during the Pro-Am ahead of the BMW PGA Championship at Wentworth on May 20, 2015 in Virginia Water, England. (Photo by Ian Walton/Getty Images)

Niall Horan of One Direction shakes hands with JP Fitzgerald, caddie of Rory McIlroy of Northern Ireland after his round with former Manchester United footballers Paul Scholes (not pictured) and Phil Neville (R) during the Pro-Am ahead of the BMW PGA Championship at Wentworth on May 20, 2015 in Virginia Water, England. (Photo by Ian Walton/Getty Images)

Rory McIlroy of Northern Ireland tees off during the Pro-Am ahead of the BMW PGA Championship at Wentworth on May 20, 2015 in Virginia Water, England. (Photo by Ross Kinnaird/Getty Images)

Rory McIlroy of Northern Ireland looks on during the Pro-Am ahead of the BMW PGA Championship at Wentworth on May 20, 2015 in Virginia Water, England. (Photo by Ian Walton/Getty Images)

Niall Horan of One Direction talks to Rory McIlroy of Northern Ireland after their round with former Manchester United footballers Paul Scholes and Phil Neville during the Pro-Am ahead of the BMW PGA Championship at Wentworth on May 20, 2015 in Virginia Water, England. (Photo by Ian Walton/Getty Images)