Walk-on who joined the Aztecs in fall camp in 2012 ... Moved to linebacker from fullback after the 2013 spring season.
2012: Redshirted his first year on The Mesa.
High school: Three-year letterwinner at San Rafael High in San Rafael, Calif. ... Was a team captain the final two years ... Was an all-league pitck at defensive end ... Also played running back ... Helped SRHS to a 10-0 and league championship as a junior.
Personal: Born Nov. 13, 1993, in San Francisco, Calif. ... Son of Kei Matsumoto and Chris Lamen ... Also was recruited by UC Davis and Boise State, among others ... Is majoring in psychology.