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|Born||May 28, 1960|
|Highest ranking||37 (1990–1992)|
|Highest||143 (1998 Benson & Hedges Championship)|
|Best ranking finish||Semi-final (1990 Asian Open)|
Throughout his career Chappel produced some notable wins. Some of the players he managed to beat include: Steve Davis, Terry Griffiths, John Parrott, Stephen Hendry, Alan McManus, Stephen Lee and Ken Doherty. However he could not consistently produce that kind of form and his best finish was one semi-final appearance in 1990, where he lost just 6-5, on the black, to Dennis Taylor. He also reached the quarter-finals and last 16 of many tournaments throughout his career, his last run to this stage of an event being the last 16 of the 1997 Regal Welsh Open.  The highest break of his career was a 143 which he compiled in the qualifying of the 1999 World Championship.
After falling out the top 64 he struggled and eventually retired from professional play in 2001.
In April 2013 Chappel took part in the preliminary qualifiers for the 2013 World Snooker Championship. He beat David Singh 5-2 in the second round. but then lost 5-1 to Patrick Wallace in the third round.
He got into the record books for being one of three players to compile a 147 on the same in a pro am event. The others were fellow Welshmen Ryan Day and Matthew Stevens.
- "2013 Betfair World Championship Pre-Qualifiers results". World Professional Billiards and Snooker Association. Archived from the original (PDF) on 5 May 2013. Retrieved 5 May 2013.
- "Ryan Day profile at globalsnookercentre.co.uk". 2003. Retrieved 7 February 2008.