The Alliance of American Football has signed its first 100 players for the new spring league Authentic Customized Bills Jerseys , including former high-profile recruits Ty Isaac and receiver Chris Black.

The AAF begins a 10-game regular season with eight teams in February. The first batch of players to sign the league's standard three-year deal worth $250,000 was announced Monday . The players are allocated based on where they played in college or professionally. Players without geographic ties to an AAF team are allowed to sign with any team.

Players who receive NFL contracts will be allowed to break deals with the AAF, which was founded by TV and film producer Charlie Ebersol and Bill Polian.

Isaac was a five-star recruit from Illinois whose career began at Southern California and ended at Michigan. Black went to Alabama and transferred to Missouri. Both will play for Birmingham in the AAF.


The San Francisco 49ers have exercised the fifth-year option to keep defensive end Arik Armstead under contract through 2019.

The team announced the move Monday to pick up the option worth about $9 million. The deal is guaranteed for injury and will become fully guaranteed next March.

Armstead was taken 17th overall in 2015. He has six sacks and 56 tackles in 30 career games. Armstead played just six games last year before a season-ending broken hand.

San Francisco also waived linebackers Jimmie Gilbert http://www.texansauthorizedshops.com/authentic-keke-coutee-jersey , Boseko Lokombo and Donavin Newsom; and defensive backs Dexter McCoil and Channing Stribling.

The Niners signed seven undrafted free agents: WR Steven Dunbar, TE Ross Dwelley, QB Jack Heneghan Roquan Smith Bears Jersey , OL Alan Knott, OL Jamar McGloster, DL Niles Scott Authentic Durham Smythe Jersey , and S Terrell Williams.

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