World No 1 Tiger Woods said he remains in the title hunt at the PGA Championship after playing "really well" in Thursday's first round, despite shooting a one-over par 71.

Woods, a 14-time major champion who has not won a major title since the 2008 US Open, closed with a double bogey on the ninth hole to finish six strokes behind co-leaders Adam Scott and Jim Furyk.

"I'm still right there," Woods said. "I'm only six back and we've got a long ways to go."