Brendan Dolan stays in World Championship Darts title hunt
Dolan, who beat 14th seed Joe Cullen on Wednesday, upset King 4-2 to move past the third round for the first time.
King hit seven 180s to his opponent’s three but Dolan finished with an impressive average above 95.
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Hide AdThe world number 36 will play Dutchman Benito van de Pas or Toni Alcinas of Spain for a quarter-final place.
Fermanagh man Dolan had never previously made it beyond the last-32 at Alexandra Palace having suffered six third-round defeats in his career but he continued his impressive form at this year’s tournament on Sunday.