As a sophomore, he became a starter at free safety, registering 68 tackles (41 solo), 2 sacks, 6 passes defensed, one forced fumble, one blocked kick and 7 interceptions (fourth in school history).
In 2007, he became the regular starter at free safety, making 72 tackles, 6 passes defensed and 2 interceptions, one of which was returned for a Browns' franchise record 100 yards against the Baltimore Ravens on November 18.
In 2009, he missed the last 5 games of the regular season after suffering a concussion and being placed on the injured reserve list, but still tied for the team lead with 4 interceptions.
He wasn't given a contract offer as a restricted free agent at the end of the year because of his concussion history.
[5] On March 11, 2010, Pool signed a one-year deal as an unrestricted free agent with the New York Jets valued at $1.3 million.
On January 23, he recorded his first career postseason interception in the AFC Championship Game against the Pittsburgh Steelers.
On March 15, 2012, Pool signed as a free agent with the Dallas Cowboys, reuniting with former Browns defensive coordinator Rob Ryan.
[9] Key On January 16, 2015, Pool accepted a quality control coaching position at Baylor University on the staff of Art Briles.