NBA referee expected to turn himself in

Former NBA referee Tim Donaghy, being investigated for betting on games he officiated, is expected to turn himself in later this week or early next week.

When he does surrender to authorities, he will do so in U.S. District Court in Brooklyn, according to a person familiar with the FBI investigation.

Though under investigation, Donaghy has not yet been charged with any crime.

Authorities are examining whether the referee made calls to affect the point spread in games on which he or associates had wagered thousands of dollars over the past two seasons.

Over the weekend, police staked out Donaghy’s home in Bradenton, Fla., after he received two telephone threats.

•Head coach Lawrence Frank signed a multiyear contract extension with the New Jersey Nets.

•Free agent guard Morris Peterson signed with the Hornets, joining New Orleans after playing the first seven years of his career with Toronto.

•Former Sonic Desmond Mason signed a two-year deal with the Milwaukee Bucks.

•The Detroit Pistons signed forward Antonio McDyess to a two-year contract extension.

•Point guard Travis Diener signed a contract with the Indiana Pacers.

Football

Polamalu lands deal

Pittsburgh Steelers star safety Troy Polamalu signed a four-year contract extension worth $30.19 million.

•Quarterback John Beck has signed a four-year contract with the Miami Dolphins. The team’s other top pick, Ted Ginn Jr., remained unsigned a day before the first rookie practice.

•San Diego Chargers receiver Craig Davis agreed to a five-year contract.

•Atlanta Falcons cornerback Jimmy Williams is facing a misdemeanor marijuana possession charge from Richmond, Va.

•Pittsburgh Steelers defensive line coach John Mitchell has added the title of assistant head coach, a promotion announced as the team opened training camp.

•Former NFL defensive tackle Chad Eaton was arrested for investigation of domestic violence in Monroe, Wash., on Saturday.

•Montana lineman J.D. Quinn, who transferred from Oklahoma after being kicked off the team there, was arrested on suspicion of drunken driving in Missoula. Montana coach Bobby Hauck didn’t release details of the junior offensive lineman’s arrest, saying only that disciplinary action will be taken.

•Nebraska athletic director Steve Pederson has agreed to terms on a five-year contract extension.

•Tri-Cities Fever quarterback Brian Baker’s season is officially over, and possibly his career. He broke the tibia bone in his left leg in the second quarter of the Fever’s 45-43 loss Saturday night in Everett.

Miscellany

Edwards goes home

NASCAR driver Carl Edwards was released from an Omaha, Neb., hospital after being injured Sunday night in a dirt track race in nearby Greenwood. Details of the injury were not immediately available.

•Chris Simon, still serving a 25-game NHL suspension for a two-handed, stick-swinging attack against the Rangers’ Ryan Hollweg last season, re-signed with the Islanders.

•Jim Schoenfeld was promoted by the New York Rangers to assistant general manager.

•Belmont Stakes winner Rags to Riches appeared sound after a preliminary examination, a day after pulling up at the start of a scheduled five-furlong workout in New York.

•Four-time Olympic biathlon relay champion Alexander Tikhonov was convicted of involvement in a foiled slaying and sentenced to three years in prison in Moscow.