| Result | Tournament |
|---|---|
| Marshall Mcafee defeated John Welsh | 2023 Westside Saturday 12/16 10-Ball |
| Mark Tademy defeated John Welsh | 2012 Derby City Classic 9-Ball |
| Ian Brumby defeated John Welsh | 2011 World Seniors Championship Snooker |
| Michael Rhodes defeated John Welsh | 2005 PIOS - Event 4 Snooker |
| Gary Wilkinson defeated John Welsh | 2005 PIOS - Event 3 Snooker |
| John Welsh defeated Kuldesh Johal | 2005 PIOS - Event 3 Snooker |
| John Welsh defeated Lee Dagher | 2005 PIOS - Event 3 Snooker |
| Gareth Coppack defeated John Welsh | 2002 Challenge Tour - Event 4 Snooker |
| Christopher Brooks defeated John Welsh | 2002 Challenge Tour - Event 3 Snooker |
| Wayne Cooper defeated John Welsh | 2001 Challenge Tour - Event 4 Snooker |
| John Welsh defeated Richy McDonald | 2001 Challenge Tour - Event 4 Snooker |
| John Welsh defeated Marvin Aldridge | 2001 Challenge Tour - Event 4 Snooker |
| Ashley Walker defeated John Welsh | 2001 Challenge Tour - Event 2 Snooker |
| Frank Maskell defeated John Welsh | 1993 Welsh Open Snooker |
| John Welsh defeated Richard Batty | 1993 Welsh Open Snooker |
| Sonic Multani defeated John Welsh | 1993 Asian Open Snooker |
| Will Jerram defeated John Welsh | 1992 World Championship Snooker |
| John Welsh defeated Darren Hackeson | 1992 World Championship Snooker |
| Robert Foxall defeated John Welsh | 1992 Welsh Open Snooker |
| John Welsh defeated Peter Peratikou | 1992 Welsh Open Snooker |
| Sefton Payne defeated John Welsh | 1992 UK Championship Snooker |
| Sam Chong defeated John Welsh | 1992 Strachan Open Snooker |
| Stephen O'Connor defeated John Welsh | 1992 Grand Prix Snooker |
| John Welsh defeated Gunnar Valsson | 1992 Grand Prix Snooker |
| Eric Lawlor defeated John Welsh | 1992 European Open Snooker |
| John Welsh defeated Mark Faulkner | 1992 European Open Snooker |
| John Welsh defeated Steve Lemmens | 1992 European Open Snooker |
| John Welsh defeated Luke Spiller | 1992 European Open Snooker |
| Sonic Multani defeated John Welsh | 1992 Dubai Classic Snooker |
| Troy Shaw defeated John Welsh | 1992 Classic Snooker |
| Pat Kenny defeated John Welsh | 1992 British Open Snooker |
| Joe Swail defeated John Welsh | 1992 Asian Open Snooker |
| John Welsh defeated Tony Bolahood | 1992 Asian Open Snooker |
| Peter Daubney defeated John Welsh | 1991 UK Championship Snooker |
| Alan Peacock defeated John Welsh | 1991 Grand Prix Snooker |
| Amrik Cheema defeated John Welsh | 1991 Dubai Classic Snooker |
| John Welsh defeated Tim Dunphy | 1991 Dubai Classic Snooker |
| John Welsh defeated Craig Johnston-Allen | 1991 Dubai Classic Snooker |