Portland Trail Blazers -- Signed F Alaa Abdelnaby, first-round draftee (No. 25 overall) from Duke, to four-year NBA contract; no financial particulars given.

NBA -- Named Richie Powers league director of operations, Jim Hoffman PR director.

AAU Junior Olympics -- D.C. Express defeated Chicago Ultrasonics, 104-72, to advance to the round of 16 in the 14-and-under nationals in New Orleans. Robert Williams had 24 points and 12 rebounds for the Express, and Marcus Washington 21 points. Now 3-0, the Washington team faces the St. Louis Celtics today.

World Wheelchair Championships -- The United States defeated England, 66-48, in Brugge, Belgium. The Americans, 3-0 in pool play, face Canada today.

ACC All-Stars -- Atlantic Coast Conference team coached by Maryland's Gary Williams begins a six-game European tour against West German teams Friday. The team includes Cedric Lewis and Matt Roe (Maryland), Kenny Turner (Virginia), George Lynch and King Rice (North Carolina), Wayne Buckingham (Clemson), Matt Gelger (Georgia Tech), Tom Gugliotta (N.C. State), Billy McCaffrey (Duke), Anthony Tucker (Wake Forest).


Chicago Bears -- Veteran CB Vestee Jackson and rookie QB Peter Tom Willis (third round, Florida State) accepted series of one-year deals.

Cleveland Browns -- OT Rickey Bolden, who has had a broken ankle, arm, thumb and shoulder in his six-year career, retired to become a minister.

Green Bay Packers -- Signed LB Brian Noble.

New York Jets -- Claimed LB Dan Murray off waivers.

Philadelphia Eagles -- Sent OL Ken Reeves to Browns for an undisclosed pick.

Seattle Seahawks -- P Ruben Rodriguez agreed to one-year contract, ending holdout. KR James Henry was waived.


U.S. National Team -- Scheduled a rematch Sept. 15 in High Point, N.C., against Trinidad and Tobago, the team it beat in November to qualify for World Cup '90. Lent defender Steve Trittschuh to Czechoslovak champion Sparta Prague through next June 15.


Baltimore Blast -- Signed MF Richard Chinapoo, one-year contract. After two years with the Dallas Sidekicks, he rejoins his 1983-88 team; he is one of only five Blast players to have had a 40-goal season.


George Washington -- Canadian diver Trevor Palmatier and Turkish swimmer Tuba Guvelioglu signed national letters-of-intent to enroll this fall. Palmatier was a senior national champion finalist in 1986-89; Guvelioglu broke 10 women's national records in Turkey.

Upsala -- The NCAA placed the East Orange, N.J., school's Division III basketball program on probation for five years, banned from postseason play for three years. The infractions committee cited payments of more than $11,000 to players by a former member of the college's governing board, among violations between 1984 and 1988.


George Dixon, one of the great running backs in Canadian Football League history, died at 56 Monday night in Montreal; an inoperable brain tumor was diagnosed in late April. In 1962 with the Alouettes, Dixon won the Schenley Award as Canada's outstanding player, having set a CFL rushing record of 1,520 yards and scored 15 touchdowns.


Kenwood Cup -- A woman died when a Japanese yacht racing in the cup series capsized off the coast of Molokai, a Hawaiian island just north of Maui. The remaining 13 members of the all-female crew either swam to shore or were picked up by other boats in the Honolulu-Molokai race shortly after the craft hit an underwater reef, the Coast Guard said.