Kaymer lurking as Gribble and Bryan lead Honda Classic

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Cody Gribble and Wesley Bryan fired six-under-par 64s to take the early lead at the Honda Classic.

American pair Gribble and Bryan are a shot clear atop the leaderboard after Thursday's opening round in Florida.

Gribble, who earned his first PGA Tour win at the Sanderson Farms Championship in October, had seven birdies and one bogey.

Bryan followed up his tie for fourth at the Genesis Open last week with six birdies from his last 10 holes.

Martin Kaymer also shot his way into contention with a five-under-par 65.

The steely German enjoyed a solid season on the European Tour last year, but he will be looking to make an impact in the majors once again.

Kaymer has company at five under, joined by India's Anirban Lahiri.

PGA National was uncharacteristically tame Thursday. The dreaded "Bear Trap" -- holes 15 through 17 -- certainly showed its teeth on a few occasions, yet failed to live up to its daunting hype.

Rickie Fowler - who is searching for his first win since last January - and Ian Poulter led a group at four under after shooting 66s.

A number of European Tour stars are in the field this week. One of the most talented, yet relatively unheard of in the United States, Tyrrell Hatton shot a two-under 68.

The Englishman had four birdies on the back nine, but double-bogeyed the par-three 17th. He has risen to 18th in the world rankings.

Defending champion and former world number one Adam Scott also posted a 68 with two birdies in his last four holes. He defeated Sergio Garcia, who also carded the same score on Thursday, by one shot last year.

A host of notables, including Paul Casey, Rafa Cabrera Bello and Emiliano Grillo, also went two under on Thursday. Two-time major champion Zach Johnson joined that group as well.