LOUISVILLE, Ky. - Japan's Kiyoshi Murota shot a 6-under-par 66 Thursday to overshadow stars such as Mark O'Meara and Tom Watson and grab the first-round lead in the weather-plagued Senior PGA Championship.

After a 90-minute delay at the start of the round and a later suspension of play that lasted more than three hours, half the field was still on the course when darkness fell. Those 78 players will hit Valhalla Golf Club early Friday to complete the first round.

Murota had a 1-shot edge over alternate Trevor Dodds, with former Masters and British Open winner O'Meara another stroke back at 68. Watson shot a 70.

PGA Tour

IRVING, Texas - Jeff Overton shot a bogey-free, 6-under 64 to take the first-round lead at the Byron Nelson Championship, a stroke ahead of Ryan Palmer.

Palmer has made the cut only once in his seven previous Nelson appearances. This week, he is letting his caddie call all his shots.

European Tour

WENTWORTH, England - Luke Donald shot a 7-under 64 to close in on the top ranking after a rainy, incomplete first round of the BMW PGA Championship, leading No. 1 Lee Westwood by 8 strokes.