(Reuters) - A missed cut in his last start and an ongoing swing change proved to be no handicap for Jimmy Walker as he charged into a share of the lead in the opening round of the Hero World Challenge in the Bahamas on Thursday. The 36-year-old American, taking advantage of light breezes on a receptive layout softened by recent rain, birdied four of the last five holes as he fired a sizzling six-under-par 66 at Albany Golf Club in New Providence. World number one Jordan Spieth spectacularly aced the par-three second with a six-iron on the way to an opening 67, ending the day level with fellow Americans Bubba Watson, Bill Haas and Brooks Koepka, and Australian Adam Scott. More...