| Result | Tournament |
|---|---|
| John Spencer defeated Unknown Player | 21 Years of Embassy Highlights Snooker |
| Skylar Hess defeated John Spencer | 2024 Saturday Handicapped 1-20-24 Justin Turner TD 9-Ball |
| Scott Reed defeated John Spencer | 2024 Saturday Handicapped 1-20-24 Justin Turner TD 9-Ball |
| Vince McCluskey defeated John Spencer | 1993 World Championship Snooker |
| Bjorn L'Orange defeated John Spencer | 1992 World Championship Snooker |
| Dave Martin defeated John Spencer | 1992 Welsh Open Snooker |
| Roger Garrett defeated John Spencer | 1992 UK Championship Snooker |
| Colin Morton defeated John Spencer | 1992 Strachan Open Snooker |
| Jason Walton defeated John Spencer | 1992 Grand Prix Snooker |
| Stuart Reardon defeated John Spencer | 1992 European Open Snooker |
| Paul Wykes defeated John Spencer | 1992 Dubai Classic Snooker |
| Chris Cookson defeated John Spencer | 1992 Classic Snooker |
| Euan Henderson defeated John Spencer | 1992 British Open Snooker |
| Karl Payne defeated John Spencer | 1992 Asian Open Snooker |
| Eddie Charlton defeated John Spencer | 1991 World Seniors Championship Snooker |
| Bryngmar Valdimarsson defeated John Spencer | 1991 World Masters - Men's Singles Snooker |
| Ray Edmonds defeated John Spencer | 1991 World Championship Snooker |
| David McDonnell defeated John Spencer | 1991 UK Championship Snooker |
| Jason Ferguson defeated John Spencer | 1991 Grand Prix Snooker |
| Barry Pinches defeated John Spencer | 1991 European Open Snooker |
| Steve Prest defeated John Spencer | 1991 Dubai Classic Snooker |
| Ken Doherty defeated John Spencer | 1991 Classic Snooker |
| Jason Prince defeated John Spencer | 1991 British Open Snooker |
| James Wattana defeated John Spencer | 1990 World Championship Snooker |
| John Spencer defeated Ken Owers | 1990 World Championship Snooker |
| Joe Grech defeated John Spencer | 1990 UK Championship Snooker |
| Jim Donnelly defeated John Spencer | 1990 International One Frame Shoot-out Snooker |
| Stephen Murphy defeated John Spencer | 1990 Grand Prix Snooker |
| Martin Clark defeated John Spencer | 1990 European Open Snooker |
| John Spencer defeated John Rea | 1990 European Open Snooker |
| Kirk Stevens defeated John Spencer | 1990 Dubai Classic Snooker |
| Ian Brumby defeated John Spencer | 1990 Classic Snooker |
| Jimmy White defeated John Spencer | 1990 British Open Snooker |
| John Spencer defeated Steve Campbell | 1990 British Open Snooker |
| Ken Doherty defeated John Spencer | 1990 Benson and Hedges Satellite Championship Snooker |
| Bob Harris defeated John Spencer | 1990 Asian Open Snooker |
| Steve Duggan defeated John Spencer | 1989 World Championship Snooker |
| Stephen Hendry defeated John Spencer | 1989 UK Championship Snooker |
| John Spencer defeated Andrew Cairns | 1989 UK Championship Snooker |
| Ian Brumby defeated John Spencer | 1989 International Open Snooker |
| Alex Higgins defeated John Spencer | 1989 Hong Kong Open Snooker |
| John Spencer defeated Dessie Sheehan | 1989 Hong Kong Open Snooker |
| Eddie Sinclair defeated John Spencer | 1989 Grand Prix Snooker |
| Tony Wilson defeated John Spencer | 1989 European Open Snooker |
| Craig Edwards defeated John Spencer | 1989 English Professional Championship Snooker |
| Dean Reynolds defeated John Spencer | 1989 Dubai Classic Snooker |
| John Spencer defeated Bob Harris | 1989 Dubai Classic Snooker |
| Martin Clark defeated John Spencer | 1989 Classic Snooker |
| Alain Robidoux defeated John Spencer | 1989 British Open Snooker |
| Silvino Francisco defeated John Spencer | 1989 Asian Open Snooker |