The Houston Texans agreed with left tackle Duane Brown on a multiyear contract extension Thursday. The deal is worth $53.4 million over six years and includes $22.08 million in guarantees, a league source confirmed to ESPN NFL Insider Adam Schefter. The 6-foot-4, 320-pound Brown has started all but four games since the Texans drafted him with the 26th overall pick in 2008. Brown earned Associated Press All-Pro second team honors in 2011 after helping the Texans set a franchise record for yards rushing (2,448).