Kyren Wilson recovered in the evening session to force his way back into his World Championship second-round clash with Barry Hawkins.
Trailing 6-2 going into the session, Wilson won five of the eight frames to reduce his deficit to 9-7.
Hawkins had recorded four centuries in the space of six frames in the afternoon as he surged into a commanding position.
But Wilson won the opening two frames when they resumed with breaks of 95 and 68.
Hawkins then restored his four-frame advantage but Wilson then sunk breaks of 104 and 131 as he won three of the final four frames.
In the other evening match, Zhou Yuelong and Ali Carter split the eight frames as the Chinese potter holds a 9-7 lead.
Yuelong was trailing 7-6 with three frames remaining but breaks of 65 and 66 saw him edge ahead.
He then took the honours in the final frame to hold the advantage over the two-time finalist.
Earlier, Mark Williams offered no excuses as his World Championship title defence ended at the hands of David Gilbert.
The Welshman, a shock winner of a third Crucible crown a year ago, went down to a 13-9 defeat on saturday night.
Williams was in hospital overnight after complaining of chest pains following the first session on Friday, and admitted he knew from then the title would not be staying with him for another year.
"He was the best player," Williams told Eurosport.
"I played how I feel, absolutely terrible. I tried my best but I was 5-3 down and knew from then I wouldn't win. I tried my best and won nine frames."
Prior to this year, Gilbert, the 37-year-old known as the 'Angry Farmer' had never gone beyond the second round at the Crucible.
Now he can look forward to a quarter-final meeting with Barry Hawkins or Kyren Wilson.
"I'm delighted to beat the world champion, I played really well," he said.
James Cahill's Crucible fairytale ended as the history-making amateur bowed out.
Cahill caused the greatest shock in Sheffield snooker history when he beat world number one Ronnie O'Sullivan in the first round on Tuesday.
And the Blackpool 25-year-old was close to another giant-killing as he took Stephen Maguire to a decider in their best-of-25 clash.
However, it was not to be for Cahill, the first amateur to play in the tournament, as the seasoned Scot held his nerve to settle a thrilling contest.
"It's swings and roundabouts. I was in a bit of a flow, but then the interval came and sort of took it away from me," Cahill said.
"It's hard to keep that flow going, but if you can then it is possible to reel off a few frames with the momentum. It was a good game and I wish him all the best."