A tall, strong striker, Alsop first came to prominence with
Bristol Rovers before joining
Swansea City in 1998 for £30,000 immediately following a loan deal. He signed for
Cheltenham Town from Swansea and was less than prolific in his first season, but his second year with the club proved to be a revelation. His partnership with Tony Naylor led to Alsop scoring 26 goals, including the second goal as Cheltenham beat
Rushden and Diamonds 3–1 in the Division Three play-off final. His third and final season with the club was beset by injuries and he left Cheltenham for
Oxford United at the end of 2002–4 |Oxford United, Alsop signed for
Northampton Town during the 2004–2005 season. When the season was over he signed for
Conference National side
Forest Green Rovers. After a brief spell at fellow Conference team
Tamworth he returned to Forest Green Rovers. He signed for
Conference South team
Newport County in July 2006 after being released from his contract at Forest Green. During his time at Newport they twice narrowly missed out on the promotion play-offs and twice appeared in the
FAW Premier Cup final, winning the 2008 final. Alsop was released by Newport at the end of the 2007–08 season. Other clubs include
Halesowen and
Northampton Town. Alsop signed for
Cirencester Town after being released from Newport County on a free transfer but left the side after several months to sign for
Bishops Cleeve. On 20 July 2009, Alsop made a surprise return to the Football League and signed a non-contract, month-by month agreement with Cheltenham Town, after playing in the first three pre-season friendlies for the club. He came off the bench on 18 August away at
Rochdale to score a 90th minute winning goal in a 1–0 victory for Cheltenham Town. He was released by the club along with seven other players in May 2010. He made his début for Carmarthen Town as a second-half substitute in a 2–1 win over
Aberystwyth Town on 2 January, and remained with the club until December 2012, making twelve league appearances in total. In January 2014, Alsop joined Welsh League outfit
Monmouth Town. ==Honours==