| Result | Tournament |
|---|---|
| Sean Storey defeated Guy Dennis | 1994 World Championship Snooker |
| Guy Dennis defeated Robby Foldvari | 1994 World Championship Snooker |
| Guy Dennis defeated Iwan Jones | 1994 World Championship Snooker |
| Leigh Griffin defeated Guy Dennis | 1994 UK Championship Snooker |
| Guy Dennis defeated Rory Mallon | 1994 UK Championship Snooker |
| Ronnie O'Sullivan defeated Guy Dennis | 1993 World Championship Snooker |
| Troy Shaw defeated Guy Dennis | 1993 Welsh Open Snooker |
| Guy Dennis defeated Paul Hefford | 1993 Welsh Open Snooker |
| Ian Sargeant defeated Guy Dennis | 1993 European Open Snooker |
| Peter Daubney defeated Guy Dennis | 1993 British Open Snooker |
| Guy Dennis defeated Lee Grant | 1993 British Open Snooker |
| Martin Clark defeated Guy Dennis | 1993 Asian Open Snooker |
| Guy Dennis defeated Colin Roscoe | 1993 Asian Open Snooker |
| Guy Dennis defeated Anthony Harris | 1993 Asian Open Snooker |
| Guy Dennis defeated Gary Natale | 1993 Asian Open Snooker |
| Guy Dennis defeated Craig Newson | 1993 Asian Open Snooker |
| Mick Price defeated Guy Dennis | 1992 Welsh Open Snooker |
| Guy Dennis defeated Malcolm Bradley | 1992 Welsh Open Snooker |
| Guy Dennis defeated Joe Baines | 1992 Welsh Open Snooker |
| Guy Dennis defeated Adrian Rosa | 1992 Welsh Open Snooker |
| Guy Dennis defeated Peter Delaney | 1992 Welsh Open Snooker |
| Leigh Robinson defeated Guy Dennis | 1992 UK Championship Snooker |
| Eric Lawlor defeated Guy Dennis | 1992 Strachan Open Snooker |
| Guy Dennis defeated Jason Wallace | 1992 Strachan Open Snooker |
| Guy Dennis defeated David Coles | 1992 Strachan Open Snooker |
| Guy Dennis defeated Daryl Peach | 1992 Strachan Open Snooker |
| Jason Pegram defeated Guy Dennis | 1992 Grand Prix Snooker |
| John Higgins defeated Guy Dennis | 1992 Dubai Classic Snooker |
| Les Dodd defeated Guy Dennis | 1992 Classic Snooker |
| Guy Dennis defeated Tommy Murphy | 1992 Classic Snooker |
| Guy Dennis defeated Eric Lawlor | 1992 Classic Snooker |
| Guy Dennis defeated Alex Borg | 1992 Classic Snooker |
| Guy Dennis defeated Troy Shaw | 1992 Classic Snooker |
| Guy Dennis defeated Paul Dawkins | 1992 Classic Snooker |
| Paul Davies defeated Guy Dennis | 1992 British Open Snooker |
| Guy Dennis defeated Lee Grant | 1992 British Open Snooker |
| Guy Dennis defeated Phil Mumford | 1992 British Open Snooker |
| Jason Whittaker defeated Guy Dennis | 1991 UK Championship Snooker |
| Guy Dennis defeated Mick Fisher | 1991 UK Championship Snooker |
| Guy Dennis defeated Derek Heaton | 1991 UK Championship Snooker |
| Guy Dennis defeated David Langton | 1991 UK Championship Snooker |
| Guy Dennis defeated Andrew Clark | 1991 UK Championship Snooker |
| Guy Dennis defeated Richard Davis | 1991 UK Championship Snooker |
| Jason Ferguson defeated Guy Dennis | 1991 Grand Prix Snooker |
| Guy Dennis defeated John Read | 1991 Grand Prix Snooker |
| Guy Dennis defeated Mike Dunn | 1991 Grand Prix Snooker |
| Guy Dennis defeated Iwan Jones | 1991 Grand Prix Snooker |
| Guy Dennis defeated Simon Westcott | 1991 Grand Prix Snooker |
| Franky Chan defeated Guy Dennis | 1990 Professional Play-offs Snooker |
| Ian Brumby defeated Guy Dennis | 1988 Pro Ticket Series - Event 3 Snooker |