Ricky Williams lost his appeal

Dolphins halfback Ricky Williams lost his appeal with the NFL for violating the substance abuse policy and will be ineligible for the 2006 season.

The appeal was of his fourth violation of the NFL's substance abuse policy, a ruling that places his football career in jeopardy.

Two sources said Williams was told of the ruling earlier Tuesday. This will mark the second time in three years that Williams will sit out a full season. Williams missed the 2004 campaign when he abruptly retired days before the start of training camp that summer, following his third violation of the substance abuse policy.

"I'm disappointed with the decision but I respect it," Williams said in a statement issued through the Dolphins. "I'm proud of my association with the National Football League and look forward to returning to the Dolphins in 2007."