Head to Head
| BDO World Championship 2019 | 2018/09/28 11:35 | William O'Connor v Jan Dekker | 5-4 |
Home History
| Premier League Darts 2020 | 2020/02/27 21:25 | William O'Connor v Michael van Gerwen | 4-7 |
| Players Championship 5 2020 | 2020/02/22 16:01 | Gerwyn Price v William O'Connor | 5-2 |
| Players Championship 3 2020 | 2020/02/15 14:16 | Joe Murnan v William O'Connor | 5-3 |
| Players Championship 2 2020 | 2020/02/09 13:57 | Brendan Dolan v William O'Connor | 5-1 |
| PDC World Championship 2020 | 2019/12/19 22:25 | Gerwyn Price v William O'Connor | 3-2 |
| PDC World Championship 2020 | 2019/12/16 20:10 | William O'Connor v Marko Kantele | 3-0 |
| Players Championship Finals 2019 | 2019/11/24 15:30 | Ian White v William O'Connor | 10-9 |
| Players Championship Finals 2019 | 2019/11/23 19:45 | William O'Connor v Gabriel Clemens | 10-7 |
Away History
| PDC World Championship 2020 | 2019/12/20 14:40 | Jonny Clayton v Jan Dekker | 3-0 |
| PDC World Championship 2020 | 2019/12/19 14:05 | Ryan Joyce v Jan Dekker | 2-3 |
| Players Championship 30 2019 | 2019/10/15 11:40 | Ricky Evans v Jan Dekker | 1-5 |
| Players Championship 16 2019 | 2019/05/19 13:20 | Josh Payne v Jan Dekker | 5-3 |
| Players Championship 8 2019 | 2019/03/17 16:00 | Jan Dekker v Raymond van Barneveld | 2-3 |
| Players Championship 8 2019 | 2019/03/17 15:30 | Jan Dekker v Harry Ward | 0-0 |
| UK Open 2019 | 2019/03/01 21:15 | Jan Dekker v Simon Whitlock | 3-10 |
| UK Open 2019 | 2019/03/01 15:00 | Harry Ward v Jan Dekker | 4-6 |