Petersen who has shown finally how he can really play in this tournament was tied at 2-2 with West but streaked ahead to claim a big win.
In terms of statistics it was a 92 average with six 180’s and a high checkout of 139 for the African Warrior.
As well as equaling a career best run in the tournament, he will also be a Tour Card holder for another one year producing a brilliant run when it truly matters.
Click here for more information about the PDC World Darts Championship, including schedules and the prize fund breakdown.
Afternoon session schedule
Devon Petersen (92.25) 4-2 (95.68) Steve West (R3) (0-3, 3-1, 3-0, 0-3, 3-2, 3-1)
Dimitri Van den Bergh v Luke Humphries (R3)
Michael Smith v John Henderson (R3)
https://twitter.com/officialpdc/status/1078286970302783488?s=21