Nathan Aspinall took the Premier League nightly win in Aberdeen to close on a play-off place while Luke Littler sealed top spot.
Aspinall is on the brink of qualifying after beating Chris Dobey 6-1 in the final on a dramatic evening which saw Gerwyn Price hit a nine-darter.
Dobey claimed a decider to win his semi-final 6-5 against world champion Littler, who earlier won a classic against world number one Luke Humphries that featured 14 180s.
Despite averaging 110.01, Humphries could not halt Littler, who averaged 115.96 to guarantee he would finish top of the league phase.
Littler had already qualified for the four-man play-offs in London on 29 May alongside Humphries and Price.
Price hit his second nine-darter of the campaign but ended a 6-4 quarter-final loser to Stephen Bunting.
Aspinall moved above seven-time champion Michael van Gerwen into fourth spot with a 6-3 victory over the Dutchman before dispatched Bunting 6-1.
If Van Gerwen does not claim the night win in Sheffield next week, Aspinall – who finished fifth in 2023 and 2024 – will claim the last play-off spot.
