Dave Harold stunned Shaun Murphy by beating the former world champion 3-0 to progress to the last 32 of the World Open in Glasgow last night.
Neither player could find any fluency in a scrappy opening frame which lasted 37 minutes, but Harold won it and went on to claim the second with a break of 67.
A run of 76 was enough to claim victory for the veteran Stoke potter.
Peter Ebdon also progressed as he ground his way past Steve Davis in a battle of two former world champions.
This match started in similar fashion with Ebdon nicking a scrappy opening frame.
He went 2-0 up with breaks of 47 and 35 in the second before Davis gave his fans some hope when he took the third with runs of 30 and 43.
But Ebdon found some form in the fourth and, although he broke down just short of a century, his 94 break was more than enough to seal a 3-1 win.
Earlier, world champion Neil Robertson enjoyed a successful start to his challenge, beating Graeme Dott 3-1 in Glasgow.
The contest was a rematch of this year's world final, which Robertson won 18-13 at the Crucible in May.
The Australian proved a tricky customer once more this afternoon, with a break of 48 enough to clinch the first frame before he also edged a see-saw second to open up a 2-0 advantage.
The writing then looked to be on the wall for Dott in the third frame as he found himself trailing by 45 points, but the Scot was gifted his chance at the table and staged an impressive fightback to halve the deficit.
However, any hopes of levelling the match crumbled as a century break from Robertson allowed him to wrap up the fourth frame and claim a place in the draw for the next round.
Ali Carter also progressed with a 3-1 victory over Thepchaiya Un-Nooh in the afternoon session.
Just one week after winning the Shanghai Masters, world number two Carter clinched a closely-fought opener only to see his Thai opponent hit back in the second with a break of 67.
But the Englishman kept his composure to take the next two frames and ensure his place in the last 32.