After a quiet 2012 season, Fitton entered the 2013 BDO World Darts Championship as the 16th seed. He narrowly defeated Benito van de Pas 3-2 in the first round to secure his first win at Lakeside since 2009. He then caused a big upset by defeating top seed Stephen Bunting 4-2 in the second round. In the quarter-final, Fitton was defeated 5-2 by Wesley Harms. Fitton's form improved after this but his 2014 World Championship was ended in the first round by Tony Eccles, in Eccles's last tournament before being convicted of child grooming. The following year, Fitton reached the quarter-finals again beating previous year's runner-up Alan Norris en route, before losing to Glen Durrant.