DENVER - Former Denver Broncos running back Terrell Davis officially retired from the NFL.

Degenerative conditions in both knees led Davis to cut his career short after helping the Broncos to two straight Super Bowl titles.

Davis, who missed the 2002 season and then told the Broncos last year that his knees would not be strong enough to pass a physical, was the MVP of the 1997 Super Bowl and rushed for 2,008 yards the next season on his way to becoming league MVP. Davis ran for a team-record 7,607 yards and scored a team-high 65 career touchdowns.

CARSON, Calif. - The San Diego Chargers broke off talks with unsigned rookie quarterback Philip Rivers.Rivers, chosen by the Giants with the No. 4 pick in the draft, was acquired by the Chargers in the deal that sent quarterback Eli Manning to New York. Manning was selected by San Diego with the No. 1 overall pick.

DECATUR, Ga. - A judge ordered the arrest of former star receiver Andre Rison for failing to pay $107,350 in child support.Superior Court Judge Cynthia Becker ruled that Rison is in contempt of court and should be jailed for 20 days. She asked that other jurisdictions outside the state assist in the arrest. Rison was not at court.Rison hasn't paid his $3,500-a-month child-support payment for his 16- and 18-year-old children since August 2002, the order said. The child-support total is $87,500, with the additional amount coming from interest and attorney's fees.

ATHENS, Greece - Two players on the Greek Olympic baseball team tested positive for banned substances.Andrew James Brack and Derek Nicholson, both U.S.-born Greek citizens, tested positive in samples taken Aug. 5, the Greek Olympic Committee.Brack tested positive for the steroid stanozolol, while Nicholson, an alternate on the team, tested positive for diuretics, officials said.

HOUSTON - The Houston Rockets signed free agent guards Charlie Ward and Bob Sura.The Rockets are in need of a new point guard after Steve Francis was traded to the Orlando Magic in a seven-player deal that sent two-time league scoring champ Tracy McGrady to Houston.Ward, a 10-year NBA veteran, spent most of his career with the New York Knicks. He will be reunited with Rockets coach Jeff Van Gundy, who led the Knicks from 1995 to 2001.Sura, a nine-year veteran who can play either guard spot, started his career with Cleveland, before moving on to Golden State, Detroit and Atlanta.