His only victory came in 1996 against Belgian Bruno Raes, and suffered defeats to Sean Palfrey (1995), Andy Fordham (1996, 1998), Ronnie Baxter (1997), Graham Hunt (1999), Colin Monk (2000) and Kevin Painter (2001).
He decided to switch to the Professional Darts Corporation in 2002 where his first round jinx continued – he lost to number nine seed Denis Ovens at the 2002 PDC World Championship.
When the World Championship field expanded in 2004, the top players joined in at the third round stage – where Jenkins again lost his first match (to Bob Anderson).
In the 2008 World Championship, Jenkins got through a tough first-round game against Czech qualifier Miloslav Navratil but was then beaten 4–0 by Alan Tabern in the second round.
[2] Jenkins qualified for the 2013 World Championship via the Pro Tour Order of Merit and lost to Justin Pipe 3–0 in sets in the first round, winning only two legs during the match.
[6][7] He therefore played in the qualifier and won four games to advance to the semi-finals where a fifth win would guarantee him at least a place in the preliminary round, but he was beaten 5–3 by Matt Clark.
[13] Successive wins over Dave Chisnall and Ronnie Baxter saw Jenkins play in his only quarter-final this year at the 12th Players Championship where he lost 6–2 to Peter Wright.
[14] Jenkins had 6–5 and 9–5 wins over Wayne Jones and Richie Corner at the 2016 UK Open, before losing 9–2 to Vincent van der Voort in the fourth round.
[15] He had his best run of the year at the eighth Players Championship by knocking out Kevin Painter, Steve Brown, Michael Smith and Justin Pipe to play in the quarter-finals, where he was whitewashed 6–0 by Jamie Caven.
In November 2023, Jenkins was one of three players suspended by the Darts Regulation Authority over suspicious betting patterns on matches in the Modus Super Series.