Vos qualified for the 2013 World Championship by finishing sixth on the European Order of Merit, taking the third of four places that were awarded to the highest non-qualified players. In his first appearance at the World Championship he faced reigning two-time champion Adrian Lewis in the first round and made a perfect start to the match as he took the first set to nil. He lost the next set and then missed two darts to lead 2–1, instead going on to lose 3–1. He was ranked world number 64 after the tournament. Vos qualified for the UK Open largely thanks to reaching the last 16 of the fourth qualifier where he lost 6–2 to Joe Cullen. He came through a preliminary round match against Alan Derrett, before being defeated 5–1 by Connie Finnan in the first round. He reached the main draw of two European Tour events during the year, losing 6–2 to Phil Taylor in the opening round of the Gibraltar Darts Trophy, and beating Richie Burnett 6–4 in the Dutch Darts Masters (having held off a fightback from the Welshman as Vos had led 5–1), before Michael Mansell defeated him 6–2 in the second round.