Frustrated Kaymer ends opening round on a sour note

By Mark Lamport-Stokes

KOHLER, Wisconsin (Reuters) - A double-bogey on his final hole left Martin Kaymer with a bitter taste in his mouth after he had played good, grinding golf for most of his opening round at the PGA Championship on Thursday.

The German, who won the PGA Championship when it was last played at Whistling Straits five years ago, had battled hard to record five birdies and a bogey on the challenging links-style layout where the wind picked up over the closing stretch.

However, he stumbled badly at the par-four ninth where his tee shot found the right rough and his second shot ended up well short of the green before he signed off with a three-putt from 20 feet to complete a…