Forth Worth: Masters champion Jordan Spieth birdied the 18th hole to take a four-way share of the lead after a rain-interrupted first round at the Crowne Plaza Invitational in Forth Worth, Texas.

Playing in his home state for the first time since winning the Masters at Augusta in April, Spieth sank a 19-foot putt at the final hole to shoot a six-under-par 64 to join Kevin Na, Boo Weekley and Ryo Ishikawa at the top.