Mark Selby with a shock 3–5 defeat to Andrew Pagett in the qualifying rounds of the 2013 Wuxi Classic. The tournament was the first to use a new format that required top-16 players to compete in qualifiers. In minor-ranking tournaments, Selby was runner-up in the Yixing Open, where he lost 1–4 to Joe Perry, and the Rotterdam Open, where he lost 3–4 to Mark Williams. He won the Antwerp Open, defeating Ronnie O'Sullivan 4–3 in the final. In December, in the seventh frame of his UK Championship semi-final against Ricky Walden, Selby compiled snooker's 100th officially recognised maximum break in professional competition.
2014 World Snooker Championship on to win the final 18–14 and capture his first world title. In all, Selby won 13 of the last 17 frames, and his two highest breaks of the match - 127 and 87 - came consecutively to move from 15–14 to 17–14. The victory made Selby the tenth player to win all three Triple Crown events, and reinstated him as the world number one. This was O'Sullivan's first ever defeat in a World Championship final. O'Sullivan said "I want to congratulate Mark on a fantastic tournament. He's been the best player over 17 days, that was tough he had