| Result | Tournament |
|---|---|
| Kyren Wilson defeated Nathan Williams | 2010 PIOS - Event 7 Snooker |
| Nathan Williams defeated Simon Bevz | 2010 PIOS - Event 7 Snooker |
| Nathan Williams defeated Declan Brennan | 2010 PIOS - Event 7 Snooker |
| Ben Harrison defeated Nathan Williams | 2010 PIOS - Event 6 Snooker |
| Nathan Williams defeated Robert Valiant | 2010 PIOS - Event 6 Snooker |
| Nathan Williams defeated Jamie Walker | 2010 PIOS - Event 6 Snooker |
| Leo Fernandez defeated Nathan Williams | 2009 PIOS - Event 4 Snooker |
| Kyren Wilson defeated Nathan Williams | 2009 PIOS - Event 3 Snooker |
| Adam Davies defeated Nathan Williams | 2009 PIOS - Event 2 Snooker |
| Neville Whalley defeated Nathan Williams | 2009 PIOS - Event 1 Snooker |
| Nathan Williams defeated Terry Challenger | 2009 PIOS - Event 1 Snooker |
| Lewis Roberts defeated Nathan Williams | 2008 PIOS - Event 8 Snooker |
| Darren Cook defeated Nathan Williams | 2008 PIOS - Event 7 Snooker |
| Daniel Wells defeated Nathan Williams | 2008 PIOS - Event 6 Snooker |
| Kuldesh Johal defeated Nathan Williams | 2007 PIOS - Event 8 Snooker |
| Nathan Williams defeated Gavin Lomax | 2007 PIOS - Event 8 Snooker |
| Nathan Williams defeated John Woods | 2007 PIOS - Event 8 Snooker |
| Gavin Pantall defeated Nathan Williams | 2007 PIOS - Event 7 Snooker |
| Allan Taylor defeated Nathan Williams | 2007 PIOS - Event 6 Snooker |
| Nathan Williams defeated Tom Harris | 2007 PIOS - Event 6 Snooker |
| Nathan Williams defeated Stefan Mazrocis | 2007 PIOS - Event 6 Snooker |
| Peter Lines defeated Nathan Williams | 2007 PIOS - Event 5 Snooker |
| Nathan Williams defeated Ian Ali | 2007 PIOS - Event 5 Snooker |
| Vinnie Calabrese defeated Nathan Williams | 2007 PIOS - Event 5 Snooker |
| Sydney Wilson defeated Nathan Williams | 2007 PIOS - Event 4 Snooker |
| Matthew Selt defeated Nathan Williams | 2007 PIOS - Event 4 Snooker |
| Nathan Williams defeated Tahir Miah | 2007 PIOS - Event 4 Snooker |
| Kuldesh Johal defeated Nathan Williams | 2007 PIOS - Event 3 Snooker |
| Nathan Williams defeated Sydney Wilson | 2007 PIOS - Event 3 Snooker |
| Ian Ali defeated Nathan Williams | 2007 PIOS - Event 2 Snooker |
| Nathan Williams defeated Matt Emms | 2007 PIOS - Event 2 Snooker |
| Nathan Williams defeated David Fomm-Ward | 2007 PIOS - Event 2 Snooker |
| Nathan Williams defeated Lewis Roberts | 2007 PIOS - Event 2 Snooker |
| Bjorn Haneveer defeated Nathan Williams | 2007 PIOS - Event 1 Snooker |
| Jamie Jones defeated Nathan Williams | 2006 PIOS - Event 7 Snooker |
| Gavin Pantall defeated Nathan Williams | 2006 PIOS - Event 6 Snooker |
| Nathan Williams defeated Chris Melling | 2006 PIOS - Event 6 Snooker |
| Michael Wasley defeated Nathan Williams | 2006 PIOS - Event 3 Snooker |
| Nathan Williams defeated Daniel Ward | 2006 PIOS - Event 3 Snooker |
| Nathan Williams defeated Paul Moss | 2006 PIOS - Event 3 Snooker |
| Alex Davies defeated Nathan Williams | 2006 PIOS - Event 2 Snooker |
| Nathan Williams defeated Adam Davies | 2006 PIOS - Event 2 Snooker |
| Nathan Williams defeated Munraj Pal | 2006 PIOS - Event 2 Snooker |
| Nathan Williams defeated Christopher Leake | 2006 PIOS - Event 2 Snooker |
| Marcel Price defeated Nathan Williams | 2006 PIOS - Event 1 Snooker |
| Nathan Williams defeated Lee Payne | 2006 PIOS - Event 1 Snooker |
| Carlo Giagnacovo defeated Nathan Williams | 2005 World Championship Snooker |
| Ian Preece defeated Nathan Williams | 2005 PIOS - Event 5 Snooker |
| Ben Woollaston defeated Nathan Williams | 2005 PIOS - Event 4 Snooker |
| Nathan Williams defeated Patrick Einsle | 2005 PIOS - Event 4 Snooker |