Webster came through against Raymond van Barneveld who you have to feel had his best chance of winning a ProTour title for the first time in a long time. It was a breakthrough win though for 'Webby' who hit a 102 average his highest on record for more than 2 years.
This is what it took to stop 'Barney' and he will face Whitlock for the first time in a latter stage since the 2008 Lakeside World Championship final.
Adrian Lewis has made it back-to-back Quarter-Finals after his final appearance yesterday backing up that the form is still there, will he hit the Jackpot come the end of the day??
Gerwyn Price will face Mickey Mansell, for Price he came through a tricky test against Jamie Lewis and Mansell smashed Robert Thornton to continue a great day for the Clonoe Cyclone.
Finally Josh Payne will face Toni Alcinas in a big opportunity for either with both players unseeded of course.
Click here for more information about the Pro Tour and the prize fund breakdown.
Last 16
Mark Webster 6 | 3 Raymond van Barneveld
Simon Whitlock 6 | 3 Ryan Joyce
Mario Robbe 5 | 6 James Wilson
Adrian Lewis 6 | 4 Keegan Brown
Gerwyn Price 6 | 4 Jamie Lewis
Mickey Mansell 6 | 0 Robert Thornton
Max Hopp 3 | 6 Josh Payne
Toni Alcinas 6 | 2 Ricky Evans