Reyes had a checkout percentage of 60 as he edged out Dimitri Van den Bergh 3–2 at the 2017 World Championship and faced Michael van Gerwen in round two. He missed one dart against Van Gerwen to square the match at 3–3 and lost 4–2 despite averaging a superior 106.07. This set a new record for the highest losing average at the World Championships for a few days until Raymond van Barneveld was eliminated by Van Gerwen in the semi-finals with him averaging 109.34. Reyes and Antonio Alcinas were whitewashed 4–0 in the deciding doubles match in the second round of the World Cup to the Singapore team of Paul Lim and Harith Lim.