Washington Redskins safety Tanard Jackson was suspended indefinitely again for violating the NFL's substance-abuse policy, the league announced Wednesday.

Jackson, who turns 29 this month, had missed the last two seasons because of suspensions. The Redskins had just brought him back this offseason when he was reinstated in May. It is his fourth career suspension overall.

Jackson's suspension without pay begins immediately. He last played an NFL game in 2011.

---One week after the Oakland Athletics finalized an agreement on a 10-year extension to play at O.co Coliseum, the Raiders are in talks to have the aging stadium demolished in 2015 to make room for a new home, the San Francisco Chronicle reported Wednesday.

Oakland's O.co Coliseum is the lone facility shared by a Major League Baseball club and a team in the National Football League.

According to the newspaper, the talks, revealed in a memo to Mayor Jean Quan from planners of the city-backed Coliseum City sports-retail project, stunned officials of the Oakland-Alameda County Coliseum Authority -- the agency that reached an agreement last Thursday to keep the A's in the existing ballpark for a decade. Representatives of Coliseum City expect to reach a deal with the Raiders by the end of the summer that would lead to the opening of a new football stadium on the existing site by 2018, the Chronicle reported.

---Indianapolis Colts owner Jim Irsay must testify in a custody case involving the children of a woman who lives in one of his homes, the Indianapolis Star reported Wednesday.

The newspaper said Irsay was subpoenaed by Greg Martin, who said he is concerned about the well-being of his minor children, ages 17 and 12, when they are in Irsay's presence.

Irsay was arrested March 16 just before midnight and faces two charges of impaired driving. After his arrest, he spent time in a drug rehabilitation facility.

In a June 17 letter to the Morgan County (Ind.) court, Martin stated that his children were in the home of his ex-wife, Jami Martin, on the night of Irsay's arrest. The home, which Irsay bought for $1 million in February, is a few blocks from where he was arrested.

---Ten days before the first training camp opens, NFL teams get one final chance to add talent to their roster with the annual supplemental draft scheduled for Thursday at 1 p.m. ET.

This year's class offers just four names and lacks the obvious talent that led the Cleveland Browns to invest a second-round selection in former Baylor wideout Josh Gordon in 2012. None of the players are expected to fetch a high pick, but a late-round selection could be warranted.

The supplemental draft was originally created for players who had lost their eligibility between the primary NFL Draft in April and the beginning of the next season.

The four players are: wide receiver Chase Clayton of New Mexico, linebacker Darius Lipford of North Carolina, defensive tackle LaKendrick Ross of Virginia-Lynchburg and running back Traylon Shead of SMU.