The Seattle SuperSonics have decided not to pick up the one-year option in former all-star guard David Thompson's contract.

Thompson's contract with the team now coached by former Washington Bullets assistant Bernie Bickerstaff ended Wednesday, and the SuperSonics were given an extension until yesterday to decide on the option, said team spokesman Jeff Troesch.

Thompson, 31, averaged 6.7 points in seven games (99 minutes) of the team's summer league schedule. "His performance in summer league has not been spectacular," Troesch said.

Seattle still has right of first refusal for Thompson's services as a free agent . . .

The Philadelphia 76ers outscored the Washington Bullets, 32-18, in the fourth quarter and pulled away to win, 127-105, on the Princeton (N.J.) Summer League's opening night.

Guard Tom Sewell led the Bullets with 17 points and forward Jim Grandholm had 16 points and a team-high seven rebounds. Philadelphia had seven players in double figures, led by Terry Catledge and Leon Wood with 22 points apiece. Former University of Maryland center Mike Davis had 11 points and seven rebounds for the 76ers . . .

Ken Perry, a 6-foot-11 center from Southern Illinois who was one of two third-round draft picks of the Washington Bullets in the June NBA draft, has elected to play in Italy, signing with a Naples team. According to Perry's agent, it is a one-year deal for $80,000, with the Bullets keeping the future NBA rights to Perry . . .

Ben Coleman, former Maryland player who spent last year in Italy, is among six players invited to the Portland Trail Blazers' training camp after summer league play. The rights to Coleman were obtained in a trade with the Chicago Bulls. Perry Young, a rookie from Virginia Tech out of Mount Hebron High School, Howard County, Md., is another -- though advised by the Trail Blazers that if a better offer comes up, take it . . .

The New Jersey Nets, without a coach since early June when Stan Albeck switched to the Bulls, expect to name a replacement this week. As to weekend reports of 90 percent certainty the new coach will be Los Angeles Lakers assistant Dave Wohl, "We have not decided on a coach," said Nets spokesman Jim Lampariello . . .

Tulane University must turn over the grades, admissions and attendance records of 11 students allegedly involved in the point-shaving scandal to lawyers for indicted basketball star John Williams, a state judge ruled. The list included a new name -- Jeff Epstein, identified by prosecutors as an unindicted coconspirator.

Judge Alvin Oser said he will decide during Williams' trial, scheduled to begin next Monday, whether lawyers for the former Green Wave athlete can use the records as evidence.

The school had argued that federal law forbids universities to give out such information without the student's permission. A university officer said that although Tulane will turn over the records, "They're not being made public."

Oser refused to drop the charge accusing Williams of scheming to rig the February road game against Virginia Tech (not one of the two games that allegedly were fixed).