Phil Taylor overcame an early blip to breeze past Jerry Hendriks 4-1 and book his place in the last 16 of the PDC World Championships.
Hendriks took the first set as Taylor struggled to find his rhythm but 'The Power' levelled and stormed through the third set without dropping a leg.
He repeated the dose to take a 3-1 lead, then did likewise in the fifth, sealing the win by taking the last 12 legs in a row.
"I'm happy with 4-1, I'm not happy with the performance," Taylor told Sky Sports 1. "The more Jerry was struggling, the more I was struggling myself. I felt sorry for him, I've never done that before.
"It was hard work, it really was."
He will face a last-16 clash with Robert Thornton, who hit 13 maximums but missed six darts for the match before finally winning a nerve-jangling clash with Paul Nicholson.
A contest of inconsistent quality came to life late on, with Thornton missing four darts for the match in the fourth leg of the sixth set and Nicholson taking it to set up a decider.
Thornton again failed to close the match out when leading 3-2 in the seventh, and missed doubles three times more in the next leg.
Nicholson took that against the throw but Thornton responded with a 130 finish and stumbled over the line in the next to lead 5-4.
Nicholson took it to a sudden-death leg but with his seventh match dart, Thornton finally won through.
Scotland's 2011 finalist Gary Anderson hit 19 180s - the most by any player in a World Championship match other than a final - but was still taken to a tie-break before beating former rugby league player John Bowles 4-3.
Bowles came from 2-1 down to lead 3-2 but missed three match darts before Anderson eventually got across the line.
Former champion John Part was emphatically dismissed by Terry Jenkins, who sealed a 4-1 win at the first time of asking with an 81 finish to win the fifth set.
Jenkins will play last year's runner-up Andy Hamilton, who beat Richie Burnett 4-1 this afternoon while Dave Chisnall ousted Daryl Gurney by the same scoreline.
Hamilton, Chisnall and Gurney were also in double figures for 180s on a profitable day for the PDC's official charity, Haven House Children's Hospice, who will receive #10 for every maximum in the tournament.