Luck, Herbert lead as Spieth's putter stutters in Sydney (Reuters)

Oct 2, 2016; Chaska, MN, USA; Jordan Spieth of the United States plays his shot from the third tee during the single matches in 41st Ryder Cup at Hazeltine National Golf Club. Mandatory Credit: Rob Schumacher-USA TODAY Sports / Reuters Picture Supplied by Action ImagesSYDNEY (Reuters) - Local amateur prospect Curtis Luck and compatriot Lucas Herbert shot five-under-par 67s for a share of the lead as Jordan Spieth struggled with his putting in the opening round of the Australian Open on Thursday.

Luck, the U.S. and Asia-Pacific Amateur champion, mixed seven birdies with two bogeys to upstage playing partners Spieth (69) and former U.S. Open champion Geoff Ogilvy (70) after their early morning…