Defending champion Liang Wenbo and former world champions Mark Williams and Stuart Bingham have suffered shock defeats on Day 4 of the English Open.

Despite a superb comeback and his 147 maximum break heroics on Wednesday, Wenbo could not repeat his performance levels as he lost 4-0 to impressive Chinese teenager Yan Bingtao.

Liang Wenbo is out of the English Open Picture by World Snooker.

The 17-year-old teenager continues to impress on the main snooker circuit after winning the World Cup for China with Zhou Yuelong and becoming one of the youngest players ever to qualify for the World Championship earlier this year.

Bingtao’s reward is a last 16 clash against Anthony McGill who won a final frame decider against Thailand’s Akani Songsermsawad.

But that is not the only surprise result on what has been an eventful day so far in Barnsley.

Less than 24 hours after knocking out Luca Brecel, two-times world champion Mark Williams suffered a 4-2 loss against Jack Lisowski. The Essex star, 26, has started the new season in good form following a disappointing two years on the baize.

Jack Lisowski

And 2015 world champion Stuart Bingham suffered an agonising defeat on the final black of his third round encounter against Iran’s Hossein Vafaei.

Bingham made a stunning comeback from 3-0 down to force a decider and fell one pot short of completing a stunning win but it was Vafaei who progressed through with a brilliant pot on the deciding black.

Meanwhile Ronnie O’Sullivan eased through to the fourth round with a 4-1 win over Zhang Yong.

O’Sullivan scored three century breaks and the match ended in bizarre circumstances as a woman intruder entered the arena and somehow got the chance to play O’Sullivan’s final shot of the match.

There were also wins for the likes of Neil Robertson, Kyren Wilson, and Michael White fresh from his impressive second round win over world number two Ding Junhui.

While also progressing through to the last 16 so far have been Alexander Ursenbacher, Aditya Mehta and Andrew Higginson,