New Jersey Nets -- Signed F Jud Buechler, a 6-6, 220-pounder from Arizona who was the 38th selection in the draft, to a multiyear agreement. Buechler led the Arizona Wildcats last season with a 14.9 scoring average and 8.3 rebounds per game. Financial terms of the contract were not announced.


Heavyweight -- In Atlantic City Tuesday night, Carl Williams (23-3, 18 KOs) successfully defended his USBA title by defeating Melton Bowen (16-2, 13 KOs), on a knockout in the fifth round of a scheduled 12-round bout.

Lightweight -- Darryll Tyson (32-3) of Washington won the NABF lightweight title in San Antonio Tuesday night by scoring a 12-round split decision victory over Jaime "Rocky" Balboa (29-10) of Monterrey, Mexico.


Hampton Institute -- Walter L. Lovett, Hampton's athletic director for 12 years, is resigning to return to a teaching position at the school. Dennis Thomas, chairman of the school's department of health, physical education and recreation, will succeed Lovett.


New York Islanders -- Signed RW Mick Vukota, 23, to a multiyear contract. Last year he scored four goals and had eight assists for the Islanders.

New York Rangers -- Named John Paddock, 36, as coach of the Binghamton (AHL) Rangers. Paddock, formerly the Philadelphia Flyers' assistant general manager, agreed to a multiyear contract. Further terms were not disclosed. Paddock has coached two Calder Cup champions, the 1987-88 Hershey Bears and the 1983-84 Maine Mariners.

JUNIOR OLYMPICS Seventy athletes ages 5 to 18 from the Glenarden (Md.) Track and Field Club traveled to the University of Nebraska in Lincoln to compete in the Athletics Congress Junior Olympics today through Sunday.


Softball -- The Cameos of Fairfax County and the Vienna-based Shamrocks will participate in the American Fastpitch Association's inaugural national tournament to be held at the Softball Country Club in Houston on Aug. 1-5. The 18-and-under tournament will feature 16 teams from around the country.