Humphries who has been in good form over the past few weeks claiming a Development Tour title on his returns continued that with a solid 6-3 victory over Stephen Bunting.
Aspinall edged out Gerwyn Price with that duo the only two remaining in the tournament who had claimed a title this season but it was 'The Asp' who made it through a 6-3 victor.
Koltsov smashed Jelle Klaasen to continue his good run today. The Russian ace who is without a Tour Card has played brilliantly all year and this tournament could be a reward for that.
Also through include the likes of Jamie Hughes, Dimitri van den Bergh and Ron Meulenkamp; with the latter hitting a 103 average on his way to victory.
Click here for more information about the Pro Tour, including the prize fund breakdown.
Last 16
100.1 | Ratajski, Krzysztof | 6 | - | 5 | Kantele, Marko | 94.6 |
91.8 | Hughes, Jamie | 6 | - | 1 | Noppert, Danny | 84.2 |
96.8 | Humphries, Luke | 6 | - | 3 | Bunting, Stephen | 96.8 |
101 | Wilson, James | 6 | - | 1 | De Sousa, Jose | 94.5 |
92.5 | Aspinall, Nathan | 6 | - | 3 | Price, Gerwyn | 96.4 |
92.3 | Van den Bergh, Dimitri | 6 | - | 5 | McGeeney, Mark | 90.9 |
103.2 | Meulenkamp, Ron | 6 | - | 5 | O'Connor, William | 103.3 |
98 | Koltsov, Boris | 6 | - | 1 | Klaasen, Jelle | 96.7 |