Given this paragraph about Sam Baker, what is the Outland Trophy?

Baker attended the University of Southern California, where he played for coach Pete Carroll's USC Trojans football team from 2003 to 2007. He was a first-team All-American as a redshirt sophomore in 2005.

He was on the official 2006 watch list for the Lombardi Award and the Outland Trophy for the best lineman. In his collegiate career Baker blocked for Reggie Bush and Matt Leinart. He was named a first-team All-Pacific-10 Conference selection by the league's coaches in 2005 and 2006.[1] He was a recognized as a consensus first-team All-American, having received first-team honors from the Football Writers Association of America, Sporting News and CBSSports.com.

Going into his fourth year as a starter, Baker was on the Lombardi Award and Outland Trophy watch lists. He was ranked as one of the "Top 20 Players Heading Into 2007" by Sports Illustrated.[2] Before his final season in 2007, Baker was already regarded by most NFL scouts as a certain top-five player in the 2008 NFL Draft.[3]

The Outland Trophy is given to the best offensive lineman in college football.