| Result | Tournament |
|---|---|
| Duane Jones defeated Declan Brennan | 2012 Q School - Event 3 Snooker |
| Declan Brennan defeated Chen Zhe | 2012 Q School - Event 3 Snooker |
| Jordan Brown defeated Declan Brennan | 2012 Q School - Event 2 Snooker |
| Martin O'Donnell defeated Declan Brennan | 2012 Q School - Event 1 Snooker |
| Jonathan Friel defeated Declan Brennan | 2011 PTC - Event 8 Snooker |
| Michael Georgiou defeated Declan Brennan | 2010 PIOS - Event 8 Snooker |
| Nathan Williams defeated Declan Brennan | 2010 PIOS - Event 7 Snooker |
| Martin O'Donnell defeated Declan Brennan | 2010 PIOS - Event 6 Snooker |
| Declan Brennan defeated Ian Brumby | 2010 PIOS - Event 6 Snooker |
| Lee Farebrother defeated Declan Brennan | 2009 PIOS - Event 5 Snooker |
| Stuart Watson defeated Declan Brennan | 2009 PIOS - Event 4 Snooker |
| Farakh Ajaib defeated Declan Brennan | 2009 PIOS - Event 3 Snooker |
| Vinnie Calabrese defeated Declan Brennan | 2009 PIOS - Event 2 Snooker |
| Declan Brennan defeated Alex Taubman | 2009 PIOS - Event 2 Snooker |
| Declan Brennan defeated Michael Georgiou | 2009 PIOS - Event 2 Snooker |
| Adam Duffy defeated Declan Brennan | 2009 PIOS - Event 1 Snooker |