TEMPE, Ariz. — The Arizona Cardinals signed cornerback Bryant McFadden to a two-year contract Sunday.

McFadden made eight regular-season starts last season while helping lead the Steelers to a Super Bowl victory over the Cardinals. He had 54 tackles and one sack despite missing six games due to an arm injury.

McFadden returned from his injury and started the final three regular-season games and also all three of the Steelers' postseason games. He also had three tackles in the Super Bowl.

The 27-year-old McFadden was a second-round draft pick by the Steelers in 2005 out of Florida State.

PHOENIX — Former NBA star Charles Barkley began serving a three-day jail sentence Saturday for a drunken-driving charge.Maricopa County Sheriff Joe Arpaio said Barkley already had been acting like a "model inmate," even chatting with others at Tent City, where inmates are housed in tents rather than traditional jail cells.Barkley, a TNT studio analyst, spent all of Saturday in custody, but was given work release from 8 a.m. to 8 p.m. Sunday. He will get work release at 8 a.m. Monday and will not have to return to the tents at 8 p.m.

UNDATED — Sports attorney David Cornwell is challenging the NFL's right to discipline players by proposing to appoint an independent arbitrator to review — and have the power to change — rulings made by the commissioner.Cornwell, one of four finalists in the running to replace the late Gene Upshaw as the NFL Players Association's executive director, described the league's current disciplinary policy as being "draconian" and requiring independent oversight.

UNDATED — Andre Agassi will make his return to competitive tournament tennis by participating in the 30-and-over Outback Champions Series event at Surprise, Ariz., in October.