[6] In 2007 he won the BDO Gold Cup, beating Scotland captain Mike Veitch in the semi-finals, and Welshman Matthew Quinlan in the final.

[9] In 2008, Chisnall won the Isle of Man Open, beating Ted Hankey in the quarter-finals and Gary Robson in the semis before defeating Robert Hughes in the final.

[13] In the World Championship, Chisnall gave Martin Adams a tough match, losing 3–5 in the deciding set to the number 3 seed.

[14] In September 2009, Chisnall won back-to-back titles claiming the Welsh Masters with a 5–1 victory over Tony O'Shea,[15] and the British Open, knocking out BDO World Champion Ted Hankey in the earlier rounds before beating Martin Atkins 2–0 in the final.

[20] Chisnall qualified for the 2010 Grand Slam of Darts as a result of his World Championship final, winning his first match against Simon Whitlock before subsequent defeats by Robert Thornton and Colin Osborne saw him exit the tournament.

[24] In the Derby Pro Tour events he reached the quarter-finals on both days of the weekend but was defeated by Jamie Caven 6–3 and Wes Newton 6–4 respectively.

[35] Chisnall was defeated 2–1 in the first round of the 2011 Grand Prix by Alan Tabern after missing 13 darts at doubles to win the match, a television record which stood until 2013.

[37] He then reached the quarter-finals of the Players Championship Finals after avenging his loss to Alan Tabern at the World Grand Prix, beating Co Stompé before losing 9–8 to Mark Webster in a tight game.

[39] He played 15-time World Champion Phil Taylor in the second round and produced a stunning performance to win 4–1 and set up a last 16 meeting with Andy Hamilton.

[40] The only other players to have beaten Taylor in the PDC World Championship outside of the final, Wayne Mardle and Mark Webster, both went on to lose their following matches, and Chisnall joined this club as he was whitewashed 4–0 by Hamilton.

[2] Chisnall began the year with an exceptional start on the tour reaching the final of the second UK Open qualifier, where he lost 6–1 to Michael van Gerwen, who hit a nine-dart finish during the match.

[45] He won the next Players Championship too, defeating the likes of Raymond van Barneveld and Terry Jenkins, before sealing the title with a 6–2 win over Ian White.

[47] During the European Tour Event 1 in Austria, Chisnall scored eight maximums, and four 140s to hit a 113.09 average in a 6–3 win over Kevin Painter, before losing to James Wade in the semi-finals.

[48] Chisnall enjoyed comfortable wins over Mark Layton, Dennis Smith, Simon Whitlock and Raymond van Barneveld to reach his first PDC major event semi-final at the UK Open.

[51] In the second European Tour event of the season Chisnall reached the final having earlier posted a 108.35 average in his second round match against Michael Rosenauer.

[62] He also beat the in-form Michael van Gerwen in the semi-finals, with the title securing his place atop the ProTour Order of Merit and therefore he was the number one seed for the Players Championship Finals,[63] where he was surprisingly whitewashed 6–0 by Wayne Jones in the first round.

He required deciding legs to advance through each of his first four matches, before beating Steve Beaton 6–4 in the semi-finals with an average of 106.30 and Peter Wright 6–2 in the final.

[70] Chisnall faced Wright in a final for the second consecutive tournament at the seventh Players Championship of the season in Barnsley and won again, this time by a 6–5 scoreline.

[71] At the World Grand Prix Chisnall reached his first PDC major final in the event where every leg must be started and finished by hitting a double.

[75] His run did earn him a spot in the Grand Slam of Darts, but he lost all three of his games against Michael Smith, Ted Hankey and Scott Waites to finish bottom of Group H.[76] Later in the month, Chisnall won his third title of the year at the 15th Players Championship by beating Robert Thornton 6–3.

[80] At the World Matchplay Chisnall defeated Dean Winstanley 10–4 and Andy Hamilton 13–10 to set up a quarter-final clash with Michael van Gerwen which he led 3–0, however he lost 16–12 in a tight game.

[82] At the Grand Slam, Chisnall topped his group to earn a place in the knockout stages where he beat former roommate Robbie Green 10–3 and youngster Keegan Brown 16–14 having been 8–2 and 12–6 behind to set up a semi-final clash with Kim Huybrechts.

[98] Wins over Mensur Suljović and Stephen Bunting saw Chisnall reach the quarter-finals of the European Championship for the second year in a row, but he was beaten 10–4 by Van Gerwen.

[103] Chisnall recovered from an 8–0 deficit in the first round of the Masters to beat Robert Thornton 10–9 and then came past Kim Huybrechts 10–5 and James Wade 11–6 to reach the final.

[106] After whitewashing Thornton 7–0 on the opening night of the Premier League, Chisnall could not pick another win from his next eight matches to finish 9th in the table and be relegated from the competition.

Chisnall then took three legs in a row to win 4–2 and reach the quarter-finals of a PDC World Championship for the first time, where he faced reigning two-time champion Gary Anderson.

[119] In the World Championship, Chisnall whitewashed Kim Huybrechts and Jamie Lewis 4–0 to reach the quarter-finals, where he was defeated 2–5 by Gary Anderson.

He beat Nathan Aspinall 6–4 in the third round and José de Sousa 6–2 at the quarter-final stage before defeating Danny Noppert 7–4 hitting a nine-dart finish en route.

[125] At the 2024 UK Open, Chisnall reached the sixth round, where he was drawn to play World Championship runner-up Luke Littler.

[127] At the World Matchplay, Chisnall suffered his worst defeat at the event by losing 10–2 to Krzysztof Ratajski in the first round, with the match ending in time for the crowd in attendance to watch the UEFA Euro 2024 final.