A caddie's helping hand is essential if golfers want to win the coveted Masters green jacket.
Billy Foster will be caddying for Britain's Lee Westwood at the 2016 Masters. Foster has been going to Augusta National for more than two decades. "You've got to slow down your thought process and keep in check of your emotions, that's your job as a caddie," Foster told CNN.
Foster tends the flag while Westwood putts on the 10th green during the second round of the 2010 Masters. Westwood led going into the final round that year but eventually had to settle for second place behind winner Phil Mickelson.
Foster also caddied for the late, great Seve Ballesteros around Augusta National's hallowed turf. Ultimately, they would fall out but Foster was honored to work with the Spaniard. "It was a fantastic experience [working for Seve] and something I'll cherish for the rest of my life. I owe him a lot and I will be eternally grateful," Foster says.
Foster has also caddied for Northern Ireland's Darren Clarke at Augusta.
Foster looks on as Westwood plays his second shot at the par 5 13th hole at Augusta National. "It's a very demanding week, not only physically, because the elevation changes are so severe, but it's the most mentally demanding golf course we play all season. You can't switch off for one second or it will make you look stupid."