Thepchaiya Un-Nooh (, ; born 18 April 1985) is a Thai professional snooker player. He has won one ranking event, the 2019 Snooker Shoot Out, and finished as runner-up in the 2019 World Open. He is regarded as one of the fastest snooker players on the World Tour, averaging less than 17 seconds per shot during the 2017–18 and the 2019–20 snooker seasons. Career Un-Nooh first entered the professional tour for the 2009–10 season by winning the 2008 IBSF World Snooker Championship. He dropped off the main tour after just one season. 2012–13 season He received the Thai nomination to compete on the snooker tour for the 2012–13 season. As a new player on the tour, he needed to win four matches to reach the main stage of the ranking events. He lost in the third qualifying round in three of the first four ranking events of the season. In September, it was announced that his match at the Players Tour Championship – Event 3 against Steve Davis was under investigation due to unusual betting patterns. Un-Nooh moved from an 8/11 odds-on favourite to 11/8 against just before the match started, and went on to lose 0–4 to the six-time world champion. World Snooker released a statement in November to confirm that there was insufficient evidence, and that no further action would be taken against Un-Nooh. He reached the final qualifying round for the UK Championship and the World Open, but lost to Michael Holt and Ryan Day respectively. Un-Nooh played in nine of the ten Players Tour Championship Events during the season; his best results were three last-16 defeats in European Tour Events, and he finished 46th on the PTC Order of Merit. His season ended when he was beaten 3–10 by Ben Woollaston in the third round of World Championship Qualifying, which saw him finish the year ranked world number 69. 2013–14 season Un-Nooh lost in the qualifying rounds for the first four ranking events of the 2013–14 season, but then beat Gerard Greene 6–5 to reach the International Championship in Chengdu, China. In his first appearance in the main draw of a ranking event he thrashed Zhang Anda 6–1, before losing by the same scoreline to Neil Robertson in the last 32. However, the experience seemed to kick start Un-Nooh's season as in 2014 he played at the venue stage of four of the remaining six ranking