| Result | Tournament |
|---|---|
| Les Dodd defeated John Giles | 1999 World Championship Snooker |
| John Giles defeated David Craggs | 1999 World Championship Snooker |
| Matthew Couch defeated John Giles | 1999 Welsh Open Snooker |
| John Giles defeated Jason Weston | 1999 Welsh Open Snooker |
| John Giles defeated Brian Rowswell | 1999 Welsh Open Snooker |
| Dave Finbow defeated John Giles | 1999 Thailand Masters Snooker |
| John Giles defeated Stephen Murphy | 1999 Thailand Masters Snooker |
| John Giles defeated Darren Hackeson | 1999 Thailand Masters Snooker |
| Sam Chong defeated John Giles | 1999 Scottish Open Snooker |
| Dave Finbow defeated John Giles | 1999 China International Snooker |
| John Giles defeated Shawn Budd | 1999 China International Snooker |
| John Giles defeated Martin Dziewialtowski | 1999 China International Snooker |
| John Giles defeated Eddie Manning | 1999 China International Snooker |
| John Giles defeated Tai Pichit | 1999 China International Snooker |
| Alfie Burden defeated John Giles | 1999 British Open Snooker |
| John Giles defeated Eddie Manning | 1999 British Open Snooker |
| John Giles defeated Wael Talaat | 1999 British Open Snooker |
| Lee Mallen defeated John Giles | 1998 World Championship Snooker |
| Allister Carter defeated John Giles | 1998 UK Tour - Event 5 Snooker |
| Joe Grech defeated John Giles | 1998 UK Tour - Event 4 Snooker |
| Paul Davison defeated John Giles | 1998 UK Tour - Event 3 Snooker |
| John Giles defeated Andrew Higginson | 1998 UK Tour - Event 3 Snooker |
| Eddie Manning defeated John Giles | 1998 UK Tour - Event 2 Snooker |
| Alex Borg defeated John Giles | 1998 UK Tour - Event 1 Snooker |
| Chris Shade defeated John Giles | 1998 UK Championship Snooker |
| John Giles defeated Les Dodd | 1998 UK Championship Snooker |
| Adrian Rosa defeated John Giles | 1998 Irish Open Snooker |
| John Giles defeated Les Dodd | 1998 Irish Open Snooker |
| Paul Sweeny defeated John Giles | 1998 Grand Prix Snooker |
| John Giles defeated Hasimu Tuerxun | 1998 Grand Prix Snooker |
| Gary Ponting defeated John Giles | 1998 Benson and Hedges Championship Snooker |
| John Giles defeated Drew Henry | 1998 Benson and Hedges Championship Snooker |
| John Giles defeated Mark Canovan | 1998 Benson and Hedges Championship Snooker |
| Bradley Jones defeated John Giles | 1997 World Championship Snooker |
| Barry Pinches defeated John Giles | 1997 Welsh Open Snooker |
| John Giles defeated Pat Horne | 1997 Welsh Open Snooker |
| Paul Sweeny defeated John Giles | 1997 Thailand Open Snooker |
| Simon Bedford defeated John Giles | 1997 Qualifying School - Event 4 Snooker |
| David Gray defeated John Giles | 1997 Qualifying School - Event 3 Snooker |
| David McDonnell defeated John Giles | 1997 Qualifying School - Event 2 Snooker |
| Philip Seaton defeated John Giles | 1997 Qualifying School - Event 1 Snooker |
| Matt Wilson defeated John Giles | 1997 International Open Snooker |
| John Giles defeated Paul Davison | 1997 International Open Snooker |
| Matthew Stevens defeated John Giles | 1997 European Open Snooker |
| John Giles defeated Barry West | 1997 European Open Snooker |
| Graeme Dott defeated John Giles | 1997 British Open Snooker |
| John Giles defeated Mike Nixon | 1997 British Open Snooker |
| John Giles defeated Garry Baldrey | 1997 British Open Snooker |
| Jamie Woodman defeated John Giles | 1997 Benson and Hedges Championship Snooker |
| John Giles defeated Simon Bedford | 1997 Benson and Hedges Championship Snooker |