Career
Walker became a Personal Digital Cellular Pro Tour Card holder in January 2012 after qualifying through Q-School in Barnsley. Walker"s best results on the Personal Digital Cellular Pro Tour in the early part of 2012 were at the 2012 United Kingdom Open Qualifier 3 and Qualifier 5, where he reached the last 32 both times. These were enough to see him qualify for his first Personal Digital Cellular major, the United Kingdom Open.
There he beat James Richardson, before losing to Joe Cullen 2–9 in the last 64.
Walker qualified for the first Personal Digital Cellular European Tour event of 2012, held in Wiener Neustadt, Vienna. He played Ronnie Baxter in the last 64 and beat the world number 17 6–5, before being on the wrong end of a 6–5 scoreline to Dean Winstanley in the next round.
He also qualified for three of the remaining four European Tour events, but lost in the first round on each occasion. His best result of 2012 came at the 10th Players Championship when he reached the last 16 by beating Nigel Heydon, Baxter and Roland Scholten, but then lost to Terry Jenkins 3–6.
After his first year on the Personal Digital Cellular tour, Walker was ranked world number 71.
He beat Michael Bushby 5–1, before losing 7–9 to Terry Jenkins. At the Austrian Darts Open Walker saw off Leon de Geus 6–1 but was then defeated 6–4 by Mervyn King in the second round. He played in 18 events during the rest of the season with the furthest he advanced being two last 32 defeats.
His best results in 2014 were two last 32 defeats.
In May 2015, Walker had wins over Ian White, Prakash Jiwa and Tony Newell at the 10th Players Championship event to reach the last 16 of a Personal Digital Cellular event for the second time in his career, where he narrowly lost 6–5 to Andrew Gilding.
