| Andy Hicks defeated Sean O'Sullivan |
2011 PTC - Event 1 Snooker |
| Sean O'Sullivan defeated Jordan Rimmer |
2011 PTC - Event 1 Snooker |
| Mike Hallett defeated Sean O'Sullivan |
2011 Q School - Event 1 Snooker |
| Sean O'Sullivan defeated James Wattana |
2011 Q School - Event 1 Snooker |
| Tian Pengfei defeated Sean O'Sullivan |
2011 Q School - Event 2 Snooker |
| Sean O'Sullivan defeated Shaun Wilkes |
2011 Q School - Event 2 Snooker |
| Sean O'Sullivan defeated James Hill |
2011 Q School - Event 2 Snooker |
| Sean O'Sullivan defeated Yu Delu |
2011 Q School - Event 2 Snooker |
| Thepchaiya Un-Nooh defeated Sean O'Sullivan |
2011 Q School - Event 3 Snooker |
| Shahram Changezi defeated Sean O'Sullivan |
2011 PTC - Event 2 Snooker |
| David Gray defeated Sean O'Sullivan |
2011 PTC - Event 3 Snooker |
| Sean O'Sullivan defeated Jason Tart |
2011 PTC - Event 3 Snooker |
| Ding Junhui defeated Sean O'Sullivan |
2011 PTC - Event 4 Snooker |
| Sean O'Sullivan defeated Markus Stocker |
2011 PTC - Event 4 Snooker |
| Sean O'Sullivan defeated Oliver Brown |
2011 PTC - Event 4 Snooker |
| Steve Davis defeated Sean O'Sullivan |
2011 PTC - Event 5 Snooker |
| Sean O'Sullivan defeated Sean Hopkin |
2011 PTC - Event 5 Snooker |
| Barry Hawkins defeated Sean O'Sullivan |
2011 PTC - Event 6 Snooker |
| Sean O'Sullivan defeated Marcin Nitschke |
2011 PTC - Event 6 Snooker |
| Justin Astley defeated Sean O'Sullivan |
2011 PTC - Event 7 Snooker |
| Sean O'Sullivan defeated Andrew Milliard |
2011 PTC - Event 7 Snooker |
| Anthony McGill defeated Sean O'Sullivan |
2011 PTC - Event 8 Snooker |
| Sean O'Sullivan defeated Robert Murphy |
2011 PTC - Event 8 Snooker |
| Martin Ball defeated Sean O'Sullivan |
2011 PTC - Event 9 Snooker |
| Sean O'Sullivan defeated Koen Walraet |
2011 PTC - Event 9 Snooker |
| Xiao Guodong defeated Sean O'Sullivan |
2011 PTC - Event 10 Snooker |
| Sean O'Sullivan defeated Craig Steadman |
2011 PTC - Event 10 Snooker |
| Sean O'Sullivan defeated Ian Barry Stark |
2011 PTC - Event 10 Snooker |
| Stephen Maguire defeated Sean O'Sullivan |
2011 PTC - Event 11 Snooker |
| Sean O'Sullivan defeated Hans Blanckaert |
2011 PTC - Event 11 Snooker |
| Stuart Carrington defeated Sean O'Sullivan |
2012 Q School - Event 1 Snooker |
| Sean O'Sullivan defeated Ryan Causton |
2012 Q School - Event 2 Snooker |
| Sean O'Sullivan defeated Michael Wild |
2012 Q School - Event 2 Snooker |
| Sean O'Sullivan defeated Mohammed Al Shaikh |
2012 Q School - Event 2 Snooker |
| Sean O'Sullivan defeated Nick Dyson |
2012 Q School - Event 2 Snooker |
| Sean O'Sullivan defeated Christopher Keogan |
2012 Q School - Event 2 Snooker |
| Tony Knowles defeated Sean O'Sullivan |
2012 Q School - Event 3 Snooker |
| Tony Drago defeated Sean O'Sullivan |
2012 Wuxi Classic Snooker |
| Ian Burns defeated Sean O'Sullivan |
2012 Australian Open Snooker |
| Ryan Day defeated Sean O'Sullivan |
2012 PTC - Event 1 Snooker |
| Tian Pengfei defeated Sean O'Sullivan |
2012 Shanghai Masters Snooker |
| Pankaj Advani defeated Sean O'Sullivan |
2012 PTC - Event 2 Snooker |
| Mark Selby defeated Sean O'Sullivan |
2012 European Tour - Event 1 Snooker |
| Ian Burns defeated Sean O'Sullivan |
2012 International Championship Snooker |
| Jamie Burnett defeated Sean O'Sullivan |
2012 European Tour - Event 2 Snooker |
| Allister Carter defeated Sean O'Sullivan |
2012 PTC - Event 3 Snooker |
| Jimmy Robertson defeated Sean O'Sullivan |
2012 European Tour - Event 3 Snooker |
| Sean O'Sullivan defeated David Gilbert |
2012 European Tour - Event 3 Snooker |
| Thepchaiya Un-Nooh defeated Sean O'Sullivan |
2012 PTC - Event 4 Snooker |
| Ben Woollaston defeated Sean O'Sullivan |
2012 European Tour - Event 4 Snooker |
| Chen Zhe defeated Sean O'Sullivan |
2012 UK Championship Snooker |
| Marco Fu defeated Sean O'Sullivan |
2013 European Tour - Event 6 Snooker |
| Alfie Burden defeated Sean O'Sullivan |
2013 German Masters Snooker |
| Martin O'Donnell defeated Sean O'Sullivan |
2012 European Tour - Event 5 Snooker |
| Sean O'Sullivan defeated Jack Lisowski |
2012 European Tour - Event 5 Snooker |
| Alfie Burden defeated Sean O'Sullivan |
2013 World Open Snooker |
| Sean O'Sullivan defeated Paul Davison |
2013 World Open Snooker |
| Rory McLeod defeated Sean O'Sullivan |
2013 China Open Snooker |
| Sean O'Sullivan defeated Alfie Burden |
2013 China Open Snooker |
| Sean O'Sullivan defeated Craig Steadman |
2013 China Open Snooker |
| Anthony Hamilton defeated Sean O'Sullivan |
2013 Welsh Open Snooker |
| Travis Furnish defeated Sean O'Sullivan |
2012 Pink Ribbon Snooker |
| Michael Wasley defeated Sean O'Sullivan |
2013 World Championship Snooker |
| Rory McLeod defeated Sean O'Sullivan |
2013 Wuxi Classic Snooker |
| Chen Zhe defeated Sean O'Sullivan |
2013 Australian Open Snooker |
| Sean O'Sullivan defeated Sanderson Lam |
2013 Australian Open Snooker |
| Matthew Stevens defeated Sean O'Sullivan |
2013 European Tour - Event 1 Snooker |
| Sean O'Sullivan defeated Joe Perry |
2013 European Tour - Event 1 Snooker |
| Sean O'Sullivan defeated Ryan Clark |
2013 European Tour - Event 1 Snooker |