Adrian Lewis inflicted Phil Taylor's first defeat of the Premier League Darts season as he came from behind to win 8-5 in Bournemouth.
Reigning PDC world champion Lewis came from 4-1 down with the help of a 160 checkout to end Taylor's nine-game winning run in style.
"I'm not in the play-offs yet though," said 27-year-old Lewis.
"I've got to treat every game like a final now, starting with Gary Anderson in Liverpool next week."
Lewis had been the only player to pick up a point against 15-times world champion Taylor this season after the pair fought out a 7-7 draw in Manchester two months ago.
And the victory lifted Lewis to fourth in the Premier League Darts table above Raymond van Barneveld, after the Dutchman suffered an 8-5 defeat by to Simon Whitlock.
Stoke's Andy Hamilton, meanwhile, battled to a second successive draw as he denied former champion James Wade a vital victory in their match.
The result kept alive Hamilton's slim hopes of reaching the end-of-season play offs.
"I think I played well but a draw was a fair result.
"I've battled for points all the way through the season and I never gave in again," said Hamilton.