The Stanford Athletic Department reported that Chaska High School graduate and Cardinal football center Tim Mattran has signed a free-agent contract with the Minnesota Vikings.

Mattran was one of seven Cardinal players to sign free-agent contracts with NFL teams.Tim Mattran

Mattran was included on the 2007 Rimington Award Watch List that honors the nation's top center and started all 12 games last season after missing the entire 2006 campaign due to a leg injury.

He finished his career at Stanford with 18 starts after joining Stanford as a walk-on in 2002. The CHS valedictorian in 2002, Mattran made four Pac-10 Conference Academic All-America teams.

Mattran will work out at Winter Park this weekend with the Vikings' 15 other undrafted free agents:

Husain Abdullah, S, Washington State

Martail Burnett, DE, Utah

Leger Douzable, DT, Central Florida

Marcus Griffin, S, Texas

Steven Hauschka, K, NC State

Erin Henderson, LB, Maryland

Nate Jones, WR, Texas

Travis Key, CB, Michigan State

Jeremy “J” Leman, LB, Illinois

Tim Mattran, C, Stanford

Drew Radovich, T, USC

Darius Reynaud, WR, West Virginia

Brandon Sumrall, CB, Southern Miss.

Marcus Walker, CB, Oklahoma

Kyle Wright, QB, Miami (FL)

Albert Young, RB, Iowa