[img]http://d.yimg.com/a/p/ap/20100715/capt.18d1877c14db45b89a4f5063f40aea51-18d1877c14db45b89a4f5063f40aea51-0.jpg?x=130&y=81&q=85&sig=XcghF15grW4ZSFCu2OYtGw--[/img]AP - Louis Oosthuizen of South Africa has surged to the top of the British Open before first-round leader Rory McIlroy even tees off.