JAK Jones came from behind on three occasions before getting the better of Peter Lines to secure his place in the ManBetX Welsh Open third round - but Mark Williams is out.

Cwmbran cueman Jones, 13 places below his Yorkshire opponent in the world rankings, produced a break of 54 in the deciding frame to prevail 4-3.

It’s the first time Jones has made it past round two of the event, and he is back in action today bidding to go one step further again.

Meanwhile, Cwm's world champion Williams suffered a surprise 4-2 reverse against China's Zhang Anda.

A 54 had given 49-year-old Lines the opener in yesterday’s clash at Cardiff’s Motorpoint Arena, before Jones, who beat Carmarthen’s Matthew Stevens in round one, fired in 61 to level.

Lines took the next to lead 2-1, but parity was soon restored when Jones rattled in 50 to take a high-scoring fourth frame.

The Englishman edged in front once more in a tight fifth frame, only for Jones to send the second-round encounter to a seventh and final frame.

And when he got in, the 25-year-old made no mistake, with his third half-century break of the match enough to see him over the line.

Also through to the next round is Mountain Ash cueman Duane Jones after a superb 4-2 victory over in-form Judd Trump.

Trump has been on fire this season, winning the Northern Ireland Open in November, the Masters last month and World Grand Prix as recently as Sunday.

Jones raced into a 3-0 lead but Trump sneaked the fourth frame by a single point after the Welshman made a break of 65.

The Bristolian then cut the deficit to one, only for Jones to hold his nerve in frame six with a timely 68.

After dumping Mark Selby out of the UK Championship, James Cahill sent another former world champion packing following a 4-2 defeat of Shaun Murphy.

Ding Junhui, Welsh Open winner in 2012, was pushed all the way by Oliver Lines before prevailing 4-3.