After Thirapongpaiboon's 5–0 loss to Ross Muir in the first round of Shanghai Masters qualifiers it was announced by World Snooker that the match was being investigated due to unusual betting patterns. However, the governing body concluded the case in January 2014 finding no link between the player and suspicious betting activity. The only ranking event Thirapongpaiboon qualified for this season was the Indian Open where he beat Lü Haotian 4–1, before losing 4–2 to Stuart Bingham in the second round. Thirapongpaiboon was relegated from the tour at the end of the season as he was ranked world number 87, outside of the top 64 who remain.