Former Washington running back Clinton Portis faces a federal prison sentence after he pleaded guilty last week to his role in defrauding a health-care program for retired NFL players, according to a Department of Justice statement released Tuesday.

In a plea agreement he signed in the Eastern District of Kentucky, Portis admitted he “knowingly and voluntarily joined the conspiracy” to commit health-care fraud and promised to reimburse roughly $100,000 he obtained through false claims.

The charge technically carries a penalty of up to 10 years, but prosecutors agreed to recommend a sentence within what federal guidelines call for, which is likely to be far less than that — possibly less than a year.

Adam C. Reeves, the Lexington, Ky., lawyer listed in court documents as Portis’s attorney, did not immediately return an email seeking comment.

On Friday, Portis became the latest of 15 former players to plead guilty to participating in a scheme to defraud the Gene Upshaw NFL Player Health Reimbursement Account Plan, which was established in 2006 to benefit retired NFL players.

Following an FBI investigation, the Department of Justice charged 10 former NFLers, Portis and a handful of other Washington players among them, in December 2019. It later charged five additional players.

A dozen players pleaded guilty before a trial. Portis, former wide receiver Tamarick Vanover and linebacker Robert McCune, whom prosecutors pegged as the ringleader of the scam, opted for a trial. McCune pleaded guilty two days after it started, according to the department. A trial for Portis and Vanover resulted in a hung jury. A retrial would have started for Portis and Vanover on Tuesday had they not pleaded guilty, according to the department.

Joe Horn, Correll Buckhalter, Carlos Rogers, James Butler, Etric Pruitt, Ceandris Brown, John Eubanks, Antwan Odom, Darrell Reid, Anthony Montgomery, Fredrick Bennett and Reche Caldwell, who died in June 2020, pleaded guilty before a trial.

The department accused players of fabricating claims, including the use of falsified documents and prescriptions, to receive payments from the Upshaw fund. It charged McCune and Buckhalter with recruiting former players to submit false claims for medical equipment, then collecting kickbacks. In total, the players obtained nearly $4 million from the fund, the department charged.

Portis, 40, was a beloved and productive running back during his prime in Washington. He made $43.1 million in his NFL career, which ended in 2010, but ran into financial trouble once he finished playing. Fraudsters posing as money managers drained his retirement funds, he told Sports Illustrated in 2017.

Portis will be sentenced Jan. 6.