Career
Murnan reached the last 40 of the 2010 Winmau World Masters, losing 3–0 to Filipino Ronald L Briones. Murnan qualified for the 2011 United Kingdom Open where he reached the last 32. He defeated Mark Dudbridge 9–8 in a close affair, before losing to the 1995 Embassy World Darts Champion Richie Burnett 9–6.
In March 2014, he reached the last 32 of the United Kingdom Open again, this time being beaten 9–3 by Raymond van Barneveld.
Later in the month he progressed to the last 16 of a Personal Digital Cellular 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. 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 9972) and Brendan Dolan 6–4 to play in his first Personal Digital Cellular 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.
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.
He was whitewashed 6–0 by Dave Chisnall on his Players Championship Finals debut. 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 United Kingdom Open 9–8 by Jelle Klaasen.
Personal Digital Cellular
2016: Second round (lost to Alan Norris 1–4).
