He is also only the second player in NFL history, after linebacker Thomas Davis, to play a down in the league after suffering from three torn ACLs in the same knee.

Thomas played college football at the University of Southern California under head coach Pete Carroll.

He also had 4 interceptions and was voted to his second straight All-Pac-10 2nd Team, prior to the start of 2007 spring drills, Thomas underwent surgery to repair a left shoulder dislocation.

He was the senior member and leader of the secondary that held Brady Quinn to his lowest college completion percentage in a November 2006 game.

In 2005, Thomas took over strong side (right) cornerback for the first 2 games of the 2005 season, but he suffered torn ligaments in his right knee vs. Arkansas, underwent surgery and was lost for the rest of the year.

In 2004, Thomas played in 11 games as a reserve cornerback after moving over from free safety in spring drills, most of his playing time was in the dime packages and on special teams and he made 9 tackles (7 solo), but also batted away a pair of passes and intercepted 2 others solo tackles and a pass break-up.

Ross inability to heal from his hamstring injury placed Thomas as the starting corner for the 2009 season.

Ross was asked to split time as Free Safety due to lack of depth at the position.

Thomas finished the season as the number one corner because of injuries to Corey Webster and Aaron Ross being placed on injured reserve.

His stats were 85 tackles, the highest on the team, five interceptions, one sack, 18 passes defended and one force fumble.

On August 22, 2011, in a preseason game against the Chicago Bears, Thomas tore his ACL, ending his season.

Thomas suffered an injury to his surgically repaired ACL early in training camp, but he expected to recover and return sometime during the 2012 season.