|Date of birth:||October 23, 1984|
|Place of birth:||Chanhassen, Minnesota|
|Height:||6 ft 5 in (1.96 m)|
|Weight:||298 lb (135 kg)|
|* Offseason and/or practice squad member only|
|Career highlights and awards|
|Career NFL statistics|
Mattran also participated in the State Science Bowl for two years at Chaska Senior High.
A walk-on at Stanford, Mattran did not play during his first two seasons. During his third year, however, he was used as a reserve and, by 2005, was the starting center. A serious ankle injury prevented him from playing in 2006, but he returned as a starter in 2007 after the NCAA granted him a sixth year of eligibility. He was named to the All-Academic Pac-10 team four times.
|Height||Weight||40-yard dash||10-yard split||20-yard split||20 ss||3-cone||Vert||Broad||BP||Wonderlic|
|6-4⅜ **||298 **||5.18 **||1.78 **||2.97 **||4.92 **||7.95 **||31½" **||8'11" **||X||X|
|**represents Stanford Pro Day—"X" Denotes "No Data" or "Did Not Participate"|
Ranked as the 22nd best center prospect in the draft by Scout Magazine Mattran signed with the Minnesota Vikings as an undrafted free agent following the 2009 NFL Draft. He chose Minnesota over the Baltimore Ravens because he wanted the chance to be close to home and also to learn from Pro Bowl center Matt Birk.
Mattran was waived by the Vikings during final cuts on August 30. He was re-signed to the team's practice squad the following day, but released on September 17.
Mattran was signed to the practice squad of the Jacksonville Jaguars after the team released fullback Chris Brown. He spent the final five weeks of 2008 season as a member of the Jaguars practice squad.