Inspired by his upcoming Rio Olympics golf appearance, Germany's Martin Kaymer has regained the form that made him a two-time major winner and become a PGA Championship title threat. Kaymer fired a four-under-par 66 Thursday at Baltusrol to stand one stroke off the pace of US leader Jimmy Walker after the first round of the year's final major tournament, moved up two weeks because of next month's Olympic golf event. "If you have, for example, (NBA star) Dirk Nowitzki there, (18-time Olympic champion swimmer) Michael Phelps and those guys, they are the best in what they do.
