Zhang Anda claimed the biggest win of his career on Thursday when the Chinese defeated Ronnie O’Sullivan 4-2 in the last 16 of the English Open.

Ronnie O’SullivanPhoto: Mark Stephenson / Zuma Press / Profimedia

Ronnie O’Sullivan beat Zhang Anda in the round of 16 of the English Open

Zhang, ranked 57th in the world, led 2-1 but took advantage of a lack of concentration on the nickname “The Rocket” to win three straight frames.

“Mighty Mouse” will face Yuelong Zhou in the quarterfinals.

Also in the 1/8 finals, Luca Bresel (title of the world champion) lost the chance to climb to the first place in the world ranking (he needed to reach the semi-finals), losing the match with Ding Junhui, goal. 4-3.

British Open winner Mark Williams was beaten 4-3 by Liu Hongyu (world number 89) despite the Welshman leading 3-2.

English Open, quarterfinals

Martin O’Donnell – John Higgins

Judd Trump – Matthew Selt

Zhang Anda – Yuelong Zhou

Liu Hongyu – Junhui Ding.