Lewis retained his World Cup of Darts crown with Phil Taylor in February. They survived two match darts from South Africa in the last 16 and one from Wales in the semi-finals to play the Belgian brothers Ronny and Kim Huybrechts in the final. Lewis lost to Kim 0–4, but beat Ronny 4–2 meaning Taylor could secure the title by defeating Kim and he did so 4–1. Lewis lost his first four games of the 2013 Premier League, but in week five he beat Michael van Gerwen 7–4 to record his first win. He narrowly avoided relegation after week nine, and could only pick up a total of four wins from his 16 games to finish 8th in the table. Lewis reached the quarter-finals of the UK Open for only the second time in his career, but lost 6–10 to Peter Wright.