| Evan Munro defeated Allan Williams |
1997 World Championship Snooker |
| Allan Williams defeated Ewan Hunter |
1997 World Championship Snooker |
| Grant Conquest defeated Allan Williams |
1997 British Open Snooker |
| Kyndon Paddon defeated Allan Williams |
1997 Thailand Open Snooker |
| Shaun Wilkes defeated Allan Williams |
1997 European Open Snooker |
| Jon Wibberley defeated Allan Williams |
1997 International Open Snooker |
| Timothy Paling defeated Allan Williams |
1997 Welsh Open Snooker |
| Nick Spelman defeated Allan Williams |
1996 German Open Snooker |
| John Wilson defeated Allan Williams |
1996 UK Championship Snooker |
| Johl Younger defeated Allan Williams |
1996 Grand Prix Snooker |
| Jason Prince defeated Allan Williams |
1996 Benson and Hedges Championship Snooker |
| Andrew Higginson defeated Allan Williams |
1996 Asian Classic Snooker |
| Andrew Hall defeated Allan Williams |
1998 UK Tour - Event 1 Snooker |
| Allan Williams defeated Rogelio Esteiro |
1998 UK Tour - Event 1 Snooker |
| Allan Williams defeated Scott Howard |
2014 Derby City Classic Bank Pool |
| Jerry Matchin defeated Allan Williams |
2014 Derby City Classic Bank Pool |
| Allan Williams defeated Brandon Cook |
2014 Derby City Classic Bank Pool |
| Gus Briseno defeated Allan Williams |
2014 Derby City Classic Bank Pool |
| Bernie Pettipiece defeated Allan Williams |
2014 Derby City Classic One Pocket |
| Adam Wheeler defeated Allan Williams |
2014 Derby City Classic 9-Ball |
| Allan Williams defeated Marshall Wooten |
2014 Derby City Classic 9-Ball |
| Allan Williams defeated Julie Kelly |
2014 Derby City Classic 9-Ball |
| Warren Kiamco defeated Allan Williams |
2014 Derby City Classic 9-Ball |
| Allan Williams defeated Bill Hogg |
2016 Derby City Classic 9-Ball |
| Dan Louie defeated Allan Williams |
2016 Derby City Classic 9-Ball |
| Yuri Kismereshkin defeated Allan Williams |
2016 Derby City Classic 9-Ball |