Ex-Vandal Williams signs with 'Hawks

The Seattle Seahawks signed running back/fullback Eddie Williams - a former standout receiver for Idaho - off the Cleveland Browns practice squad and released tight end Dominique Byrd to clear a roster spot.

Seattle made the roster moves Tuesday. Additionally, the Seahawks released guard Brent Osborne from the practice squad and signed tight end Fendi Onobun to the practice squad.

Williams' signing comes after fullback Michael Robinson suffered a second-degree sprained ankle in the opener last Sunday in San Francisco. Coach Pete Carroll has not placed a timetable on when Robinson may return.

Williams spent the entire 2010 season on the Bears practice squad before being released at the end of training camp this year. He signed with Cleveland on Sept. 7.

49ers sign former Boise State standout Johnson: The San Francisco 49ers signed running back Ian Johnson to the practice squad.

It was Johnson who in January 2007 helped Boise State stun 10th-ranked Oklahoma in the Fiesta Bowl and then proposed to his cheerleader girlfriend on national television.

The Niners cleared roster room for Johnson by releasing running back Xavier Omon.

Johnson, originally signed by the Minnesota Vikings as an undrafted free agent in 2009, spent stints on the practice squads for both the Arizona Cardinals and Detroit Lions last season. He was with Detroit this year before his release on Sept. 3.