Why Rory McIlroy uses a dog headcover on his golf clubs as viewers spot detail during Masters

The reason why Rory McIlroy has always put a dog headcover on his golf clubs has been revealed.On Thursday, one of the biggest events on the annual golf calendar got underway as the Masters began at Augusta National Golf Club in Georgia.Heading in to the competition, many fans have been rooting for world number two McIlroy, who needs to win the Masters if he hopes to complete a rare career Grand Slam.But as they've watched the Northern Irishman impress at Augusta National, some have questioned why he has a dog headcover over his golf clubs, and now we know why.Throughout