The Buffalo Bills added a pair of quarterbacks following preseason injuries to Kevin Kolb and E.J. Manuel, signing Matt Leinart as a free agent and acquiring Thaddeus Lewis in a trade with the Detroit Lions.
Kolb left the Bills’ preseason loss against the Washington Redskins two days ago because of concussion-like symptoms. Manuel, a first-round draft pick this year, will miss the rest of the preseason with a left knee injury.
Leinart, 30, has played with the Oakland Raiders, Houston Texans and Arizona Cardinals over the past four National Football League seasons. A first-round draft pick of the Cardinals in 2006, Leinart won college football’s Heisman Trophy at the University of Southern California in 2004.
Lewis, 25, spent the past two seasons with the Cleveland Browns -- mostly as a member of their practice squad -- before starting the team’s 2012 regular-season finale. The Bills sent linebacker Chris White to the Lions for Lewis, who entered the NFL in 2010 as an undrafted free agent from Duke University.
The Bills host the New England Patriots in their regular-season opener on Sept. 8.