Murnan reached the last 40 of the
2010 Winmau World Masters, losing 3–0 to
Filipino Ronald L. Briones. Murnan qualified for the
2011 UK Open where he reached the last 32. He defeated
Mark Dudbridge 9–8 in a close affair, before losing to the 1995
BDO World Darts Champion Richie Burnett 9–6. In March 2014, he reached the last 32 of the
UK Open again, this time being beaten 9–3 by
Raymond van Barneveld. Later in the month he progressed to the last 16 of a PDC event for the first time as he beat the likes of
Dean Winstanley and
Dave Chisnall at the first
Players Championship, before losing 6–4 to
Andy Hamilton. He won through to the same stage of the third event where he was defeated 6–1 by
Gary Anderson. Murnan also qualified for the
German Darts Masters, but was eliminated 6–2 by
Andy Smith in the first round. In February 2015 at the
German Darts Championship, Murnan beat Michael Barnard 6–5,
Ian White 6–4 (averaged 99.72) and
Brendan Dolan 6–4 to play in his first PDC quarter-final. He fell 4–0 down to world number one
Michael van Gerwen, before closing to 4–3 with a 12 dart leg, but went on to lose 6–4. In May 2015, at the 10th
Players Championship in
Crawley, Murnan won his first PDC title and the £10,000 first prize. His run included 6–3 and 6–4 victories over
Premier League players
Stephen Bunting and
Dave Chisnall in the quarter-finals and final, respectively. The win saw him qualify for the
World Matchplay for the first time and he trailed
Adrian Lewis 7–2 in the opening round. Murnan won four successive legs, but went on to be beaten 10–7 on his televised debut. He was whitewashed 6–0 by
Dave Chisnall on his
Players Championship Finals debut. Murnan's title saw him finish the third highest of the non-qualified players on the Pro Tour Order of Merit for the
2016 World Championship. He played 2012 runner-up
Andy Hamilton in the first round and, having trailed 2–1 in sets (missing five darts to lead 2–1 himself) and 2–0 down in legs, Murnan managed to pull off a comeback victory to set up a second round match with
Alan Norris, which he lost 4–1. He was knocked out in the fourth round of the
UK Open 9–8 by
Jelle Klaasen. Murnan's first quarter-final of 2016 was at the 11th
Players Championship event and he was edged out 6–5 by
Joe Cullen. He qualified for the
World Series of Darts Finals and again lost 6–5 to Cullen. He was also knocked out in the first round of the
Players Championship Finals 6–0 by
Jermaine Wattimena.
Mark Webster defeated Murnan 3–0 in the opening round of the
2017 World Championship. Murnan lost his PDC Tour Card at the end of 2018 despite managing to qualify for the
Grand Slam of Darts for the second consecutive year. However, he won it straight back at UK Q-School in January 2019 via the Order of Merit, sealing at least another two years on the ProTour. During
UK Open 2020, he defeated
Harald Leitinger and
Karel Sedláček, making it again to the fourth round. There he lost 4–10 to
Ricky Evans. He did not qualify for any other major tournaments and after losing in the deciding match and deciding leg to
Ciaran Teehan during UK Qualification for
PDC World Darts Championship 2021 he lost a chance to maintain his Tour card. Murnan again immediately obtained his Tour card back in UK Q-School 2021. During the season he qualified for
2021 European Championship, making his debut at this major event. In the First round he los 4–6 with
Adam Gawlas. At the end of the year, Murnan qualified for
2022 PDC World Darts Championship, returning to this venue for the first time from 2017. He won his First round match against
Paul Lim 3–2, but lost in the Second round 2–3 with
Nathan Aspinall. Despite appearing only at
2022 UK Open, where he lost in the Second round, Murnan was able to hold his Tour card after finishing the season in top 64 at 63rd place, without qualifying for the World Championship. In 2023 he played only at
2023 UK Open, losing in the Third round against
Adrian Lewis 0–6. Throughout the year Murnan qualified for only one European Tour event and ended up outside of top 64 at the end of the year 2023, therefore he lost his Tour card. Having succeeded four times previously, Joe Murnan failed to get through Q School 2024 and missed out on a card for only the second season in 13 years. ==World Championship results==