Michael van Gerwen cruised into the PDC World Darts Championship quarter-finals, while 16-time world champion Phil Taylor set up a tantalising meeting with rival Raymond van Barneveld.
World number one Van Gerwen overcame Darren Webster 4-1 but was let off the hook in the opening set when he failed to checkout on eight before finishing on a double one.
Van Gerwen was unable to see out the win in the fourth set despite closing the first leg on 170, though his nerve returned to complete the victory with an average of 104.44.
Awaiting Van Gerwen in the quarter-finals is Daryl Gurney, who let a 3-1 lead slip before seeing off Mark Webster in the final set for a 4-3 victory.
Taylor is looking to win the competition for the first time since 2013 and was made to work hard for a 4-2 victory over Kim Huybrechts.
The Englishman stormed into a 3-0 lead before having to stave off a decisive set, his superior average of 101.37 playing a pivotal role in his progression.
Dave Chisnall defeated Jelle Klaasen 4-2 and will face two-time defending champion Gary Anderson in his first quarter-final appearance.
Chisnall's highest checkout was just 79, but he threw 12 180s in a comfortable display against the Dutchman.
James Wade threw fewer 180s and had a worse average than Michael Smith but forced his way into the final eight by fighting back from 3-1 down to win 4-3.
Wade will face Peter Wright, who was a 4-1 winner against Ian White, next.