Ronnie O'Sullivan hit two century breaks as he bulldozed his way past Ding Junhui in the Riyadh Season Snooker Championship quarter-final.
The seven-time world champion made light of his 2am finish after breaks of 129 and 113, along with an 85, put Ding to the sword in a 4-0 whitewash.
The Chinese player scored just 57 points across the four frames as O’Sullivan set up a last-four tie with Mark Allen, who beat Mark Selby 4-2.
Breaks of 88 and 68 helped Selby take a 2-1 lead, but Allen hit back to level at 2-2 and then compiled scores of 76 and 75 to get over the line.
Mark Williams will play Luca Brecel in the other semi-final on Friday.
Williams struck a match-winning break of 68 in the final frame to clinch a 4-3 victory over Judd Trump.
That followed a break of 86 in the previous frame as the Welshman came back from 3-2 down.
Brecel also produced a clutch break to win a final-frame decider against Kyren Wilson.
It was all to play for at 3-3 but the Belgian stepped up with a break of 58 to claim victory.
