|Full name||Peter Alan Keen|
|Date of birth||16 November 1976|
|Place of birth||Middlesbrough, England|
|Height||6 ft 0 in (1.83 m)|
|2001||→ Darlington (loan)||7||(0)|
|2006–2007||Horden Colliery Welfare||8||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 12:10, 2 September 2007 (UTC).
He let in five goals on his Carlisle debut, a 5-2 defeat away to Halifax Town and did not play again until the following February when he let in another four goals away to Rotherham United. On 24 October 2000, Keen scored for Carlisle with a kick from his own penalty area in the 3-2 defeat away to Blackpool.
He joined Darlington on loan in March 2001, before returning to the reserves at Carlisle. He finally gained a regular place in the Carlisle side during the 2001-02 season, but was released at the end of the season as Carlisle sought to cut costs. However, he re-signed for the club before the start of the next season but after then was ousted as first choice keeper by Matt Glennon.
Carlisle were relegated to the Conference in 2004, but Keen remained with the Cumbrians until September that year when he joined fellow Conference side Scarborough on a free transfer, playing just four times before suffering a serious shoulder injury.
He left Scarborough at the end of the 2004-05 season and was a regular in the Gateshead side during the 2005-06 season, but left to join Horden Colliery Welfare at the end of the season. In February 2007 he rejoined Gateshead. Keen joined Billingham Synthonia before the start of the 2008-09 season.