Fergal O'Brien misses out on British Open last-eight

Fergal O'Brien has missed out on a spot in the Cazoo British Open quarter-finals after a 4-2 defeat to Jack Lisowski in Cheltenham.

The Dubliner had made it into Round 3 after a comeback win over Matthew Stevens by four frames to three in Wednesday's evening session but was unable to go one better 24 hours later against England's Lisowski.

Elsewhere, Mark Williams advanced to the quarter-finals after coming from behind to beat Ding Junhui 4-2.

Three-time world champion Williams, winner of this title for a second time in 2021, lost the first two frames against China's Ding, who posted a break of 123 in the second.

The Welshman subsequently stormed back with four in a row to secure progress, clinching victory with a break of 99.

Williams will next face China's Fan Zhengyi, who defeated compatriot Ma Hailong 4-1 with breaks of 81, 71 and 54.

Tom Ford meets Xiao Guodong after they beat Scott Donaldson 4-1 and Ali Carter 4-2 respectively.

In Thursday's other late matches, Iran's Hossein Vafaei made two century breaks as he progressed with a 4-2 win over Graeme Dott.

Additional reporting: PA