| Result | Tournament |
|---|---|
| Gary Miller defeated Jimmy O'Shea | 2012 World Seniors Championship Snooker |
| Tony Chappel defeated Jimmy O'Shea | 2011 World Seniors Championship Snooker |
| Paul Clutton defeated Jimmy O'Shea | 1998 UK Tour - Event 1 Snooker |
| David Craggs defeated Jimmy O'Shea | 1997 World Championship Snooker |
| Neil Wood defeated Jimmy O'Shea | 1994 World Championship Snooker |
| Roger Garrett defeated Jimmy O'Shea | 1994 Welsh Open Snooker |
| Jimmy O'Shea defeated David Rice | 1994 Welsh Open Snooker |
| Jimmy O'Shea defeated Simon Morfitt | 1994 Welsh Open Snooker |
| Graham Stevens defeated Jimmy O'Shea | 1994 International Open Snooker |
| Jimmy O'Shea defeated Roberto Frezza | 1994 International Open Snooker |
| Norman Maher defeated Jimmy O'Shea | 1994 British Open Snooker |
| Jimmy O'Shea defeated Wim Braam | 1994 British Open Snooker |
| David Mole defeated Jimmy O'Shea | 1993 World Championship Snooker |
| Jamie Burnett defeated Jimmy O'Shea | 1993 Welsh Open Snooker |
| Michael Judge defeated Jimmy O'Shea | 1993 UK Championship Snooker |
| Jimmy O'Shea defeated Steve Harrison | 1993 UK Championship Snooker |
| Jimmy O'Shea defeated John Clouden | 1993 UK Championship Snooker |
| Jimmy O'Shea defeated Wim Braam | 1993 UK Championship Snooker |
| Jason Wallace defeated Jimmy O'Shea | 1993 British Open Snooker |
| Jimmy O'Shea defeated Paul Hefford | 1993 British Open Snooker |
| Jimmy O'Shea defeated Jayson Morris | 1993 British Open Snooker |
| Frank Maskell defeated Jimmy O'Shea | 1992 World Championship Snooker |
| Jimmy O'Shea defeated Richard Pipe | 1992 World Championship Snooker |
| Jimmy O'Shea defeated David Hoggarth | 1992 World Championship Snooker |
| Ian Hurdman defeated Jimmy O'Shea | 1992 UK Championship Snooker |
| Neil Selman defeated Jimmy O'Shea | 1992 Grand Prix Snooker |
| Jimmy O'Shea defeated Sefton Payne | 1992 Grand Prix Snooker |
| Timothy Paling defeated Jimmy O'Shea | 1992 British Open Snooker |
| Darryn Walker defeated Jimmy O'Shea | 1991 UK Championship Snooker |
| Jimmy O'Shea defeated Roy Bigg | 1991 UK Championship Snooker |
| Jimmy O'Shea defeated Paul Riley | 1991 UK Championship Snooker |
| Neil Martin defeated Jimmy O'Shea | 1991 Benson and Hedges Satellite Championship Snooker |
| Jimmy O'Shea defeated David Langton | 1991 Benson and Hedges Satellite Championship Snooker |