Former top-ranked American Jordan Spieth yielded the spotlight in Thursday's first round of the Australian Open to a pair of rising local stars: U.S. amateur champion Curtis Luck and rookie professional Lucas Herbert. Herbert and Luck both shot 5-under 67 to lead the tournament by a shot from a group of five players including the 51-year-old Australian Peter O'Malley who shared the lead until he bogeyed his final hole. World No.5 Spieth was a further shot back among a group of eight players, including seven Australians, at 3-under 69. More...