Billy Glasson shot a three-under-par 68 yesterday for a two-round total of 130 that kept him in the lead in the Panasonic Las Vegas Invitational golf tournament.

Glasson, who twice lost his PGA Tour playing rights, rolled in a 40- to 50-foot putt on his final hole at the Las Vegas Country Club.

"It's so hard to come back after shooting a 62 (the career-best score he had in Wednesday's opening round) and put a good round together," said Glasson, 24, in his third year on the Tour.

"Overall, it was a good, solid round. I'm happy going into tomorrow," said Glasson, who has undergone surgery four times, the latest Dec. 24, on knees damaged in high school athletics.

He wears braces on both knees, moves slowly and with obvious discomfort, and has to apply ice to both knees every night.

Glasson, whose best career finish was a tie for fifth two weeks ago in the Bay Hill Classic, held a one-shot lead over the only man to win six player-of-the-year titles, Tom Watson, in this five-day, 90-hole tournament that offers a total of $1,042,000 in prizes . . .

Pearl Sinn, a 17-year-old senior at Bellflower High School near Los Angeles, shot a two-under-par 70 to share the first-round lead in the LPGA's $250,000 GNA tournament in Glendale, Calif., with Jan Stephenson, Barbara Moxness and Atsuko Hikaje.