The Kansas City Chiefs announced today that they have signed offensive lineman Bryan Mattison in the wake of an injury to their regular center, Rodney Hudson.
Mattison entered the NFL as an undrafted free agent with the New York Jets in 2008, after playing his college ball at Iowa.
Mattison actually played DE in college but in 2009, he landed with the Baltimore Ravens. There, he shifted guard. He was waived on Nov. 24, 2011. The following day, he was picked up by the St. Louis Rams.
Here is an article on Mattison trying to make the Ravens as a center.