England's Judd Trump avoided an upset as he came through his first round match at the World Snooker Championships ©Getty Images

Judd Trump overturned a 6-3 deficit to win a thrilling final-frame decider against Thepchaiya Un-Nooh and keep his World Snooker Championship hopes alive today.

England's 29-year-old world number seven was outplayed at he Crucible Theatre in Sheffield last night and in danger of joining five-times winner Ronnie O'Sullivan as a first-round casualty.

But he rediscovered his form to win five of the first six frames this morning for an 8-7 lead.

Thailand's world number 43 forced a deciding frame but a dreadful miscue helped Trump to a 10-9 win.

China's world number 35 Zhou Yuelong earned a shock win over world number six Mark Allen in the first round of the World Snooker Championships in Sheffield ©Getty Images
China's world number 35 Zhou Yuelong earned a shock win over world number six Mark Allen in the first round of the World Snooker Championships in Sheffield ©Getty Images

Trump is the new bookmakers' favourite to lift his first world title after O'Sullivan's shock exit to amateur James Cahill.

The evening ended with an upset, however, as world number six Mark Allen became the third seed to exit the first round as he was beaten 10-7 by China’s world number 35 

The 33-year-old Northern Ireland player trailed 7-2 overnight, and lost the first two frames of the day before winning five on the bounce.

His opponent regained impetus to win the decisive frame.