At the 2012 Ryder Cup, Graeme McDowell and Luke Donald take a peek at Rory McIlroy's phone during the European team photo. What were they looking at? Given the amount of outbursts, political statements and general complaining from their peers on the PGA Tour, there's a good chance they're checking Twitter.
We recapped the best moments the social networking site has produced in the golf world over the years. Enjoy.