| Result | Tournament |
|---|---|
| Dennis Wolrab defeated Peter Williams | 2019 VNEA Las Vegas 9-Ball |
| Ron Kirkpatrick defeated Peter Williams | 2019 VNEA Las Vegas 9-Ball |
| John Glick defeated Peter Williams | 2019 VNEA Las Vegas 9-Ball |
| Tyler Baker defeated Peter Williams | 2019 VNEA Las Vegas 9-Ball |
| Andres Deherrera defeated Peter Williams | 2019 VNEA Las Vegas 8-Ball |
| Kevin Miller defeated Peter Williams | 2019 VNEA Las Vegas 8-Ball |
| Rui Barradas defeated Peter Williams | 2019 VNEA Las Vegas 8-Ball |
| Peter Williams defeated Earlwin Wolffe | 2019 VNEA Las Vegas 8-Ball |
| Peter Williams defeated Randy Cross | 2019 VNEA Las Vegas 8-Ball |
| Marcus Cordes defeated Peter Williams | 2019 VNEA Las Vegas 8-Ball |
| Jason Sheerman defeated Peter Williams | 2014 Derby City Classic Bank Pool |
| Ricky Bingham defeated Peter Williams | 2013 Derby City Classic Bank Pool |
| Tim Richert defeated Peter Williams | 2013 Derby City Classic Bank Pool |
| Nigel Bond defeated Peter Williams | 2012 World Seniors Championship Snooker |
| Paul Vaughn defeated Peter Williams | 2012 Derby City Classic Bank Pool |
| Jason Baker defeated Peter Williams | 1993 World Championship Snooker |
| James Gibson defeated Peter Williams | 1993 Welsh Open Snooker |
| Darren Limburg defeated Peter Williams | 1993 International Open Snooker |
| Mark Williams defeated Peter Williams | 1993 European Open Snooker |
| Ian Hurdman defeated Peter Williams | 1993 British Open Snooker |
| Jamie Burnett defeated Peter Williams | 1993 Asian Open Snooker |
| Kieran McAlinden defeated Peter Williams | 1992 World Championship Snooker |
| Peter Williams defeated Anthony Gorman | 1992 World Championship Snooker |
| John Benton defeated Peter Williams | 1992 Welsh Open Snooker |
| Peter Williams defeated David Boon | 1992 Welsh Open Snooker |
| Chris Henry defeated Peter Williams | 1992 UK Championship Snooker |
| Mark Elliott defeated Peter Williams | 1992 Strachan Open Snooker |
| Richard Wheelhouse defeated Peter Williams | 1992 Grand Prix Snooker |
| Lyndon Smith defeated Peter Williams | 1992 European Open Snooker |
| Anthony Halpin defeated Peter Williams | 1992 Dubai Classic Snooker |
| Neil Martin defeated Peter Williams | 1992 Classic Snooker |
| Neil Figgins defeated Peter Williams | 1992 British Open Snooker |
| Steve Russell defeated Peter Williams | 1992 Asian Open Snooker |
| Kevin Lownds defeated Peter Williams | 1991 UK Championship Snooker |
| Dale Milton defeated Peter Williams | 1991 Grand Prix Snooker |
| Jason Wallace defeated Peter Williams | 1991 Dubai Classic Snooker |