Sam Randolph, the 1985 U.S. Amateur champion seeking his first PGA victory, charged past veterans Lee Trevino and Curtis Strange and took a four-stroke lead after the third round of the $500,000 Bank of Boston Classic in Sutton, Mass.

Trailing Trevino by two strokes and Strange by one when the round began, Randolph carded seven birdies without a bogey for a 7-under-par 64 and a 54-hole total of 199.

Defending champion Gene Sauers, Australian Wayne Grady and Canadian Ray Stewart were tied for second at 203. Sauers and Grady each shot 68 and Stewart rode two eagles to a 65.

Randolph, 23, a former Southern Cal star, was just one stroke off the course record of 63 for Pleasant Valley Country Club's 7,110-yard layout.

Playing in a threesome just ahead of Trevino and Strange, Randolph took the lead with five birdies for a 5-under 31 on the front nine.

Trevino dropped out of a share of the lead with a bogey on the eighth green and, after making the turn, bogeyed three holes in a row. He shot 72 for a 205 total. Strange, the year's top money winner, shot 70 -- 204 . . .

Patti Rizzo took advantage of a terrible finish by Jan Stephenson to take a one-shot lead after two rounds of a $225,000 LPGA tournament in Portland, Ore. Rizzo shot a 3-under-par 69 Saturday a 36-hole total of 137, one shot ahead of Jane Geddes . . .

In Charlotte, N.C., Gary Player shot a 5-under-par 67 to take a two-shot lead over Bob Charles after two rounds of the rain-shortened World Seniors Invitational tournament. Player is at 9-under 135 with one round to play. Chi Chi Rodriguez is third at 138.