Irish Open: Best Pro-Am photos

Best buds: One Direction's Niall Horan chats to world number three Rory McIlroy on the range.

One Direction: Horan gets some tips off McIlroy and then gets to work on his swing.

Warmed up and ready to go, @NiallOfficial is about to tee off at the #DDFIrishOpen pro-am. pic.twitter.com/9XvLVNOwKt

— DDF Irish Open (@DDFIrishOpen) May 18, 2016

Wrong direction: Horan misses a putt, much to the distress of two young girls. 

Eyes on the prize: McIlroy is presented with his Player's Player of the Year Award. 

Blinkered: Former champion jumps jockey AP McCoy stares into the eyes of McIlroy.

And they're off: McCoy lets rip on the first tee.

Photo finish: McIlroy and McCoy pose with 10-time leading Cheltenham Festival jockey Ruby Walsh

Weighed in: Walsh caddies for McCoy.

Weighed down: But looks to have quickly regretted the decision.

Just for laughs: McIlroy on the first tee with Irish racehorse owner JP McManus. 

Gallop: Graeme McDowell goes for a light jog down the fourth. 

China's champ: Recent European Tour winner Hao Tong Li pulls a face.

Tackling the course: Former rugby player Brian O'Driscoll tees off on the 14th.

Light at the end of the tunnel: Padraig Harrington tees off the narrow 13th.

Captain Clarke: Darren Clarke will get a good view of potential 2016 Ryder Cup players this week.

The Master: Danny Willett and his caddie find a line off the first tee.

Keeping the white safe: 1985 World Snooker champion Dennis Taylor tees off. 

Conducting the orchestra: Miguel Angel Jimenez in buoyant mood, as always. 

Not Bernd: Austria's Bernd Wiesberger feels the cold Irish air. 

Defending champ: Soren Kjeldsen is presented with a birthday cake.