Filby won three matches in reaching the final of the South African qualifier for the 2014 PDC World Championship, where he lost 9–3 against Devon Petersen. In June 2014, Filby and Petersen teamed up to represent South Africa at the World Cup of Darts. They averaged 97.40 in a doubles match 5–3 win over Germany in the first round and then beat Singapore to face the number one seeds of Phil Taylor and Adrian Lewis in the quarter-finals. Petersen lost 4–3 to Taylor, meaning Filby had to win his match against Lewis to send the tie into a deciding doubles contest, but he was beaten 4–2.