Head to Head
| Premiership Rugby | 2022/02/19 15:00 | Harlequins v Wasps | W | 29-24 |
| Premiership Rugby | 2021/11/07 16:30 | Wasps v Harlequins | W | 16-26 |
| Premiership Rugby | 2021/05/09 14:00 | Harlequins v Wasps | W | 48-46 |
| Premiership Rugby | 2021/01/31 15:00 | Wasps v Harlequins | W | 17-49 |
| Premiership Rugby | 2020/09/28 18:45 | Harlequins v Wasps | L | 23-32 |
| Premiership Rugby | 2019/12/21 15:00 | Wasps v Harlequins | W | 22-28 |
| Premiership Rugby | 2019/05/18 15:00 | Wasps v Harlequins | L | 27-25 |
| Premiership Rugby | 2018/12/29 16:00 | Harlequins v Wasps | W | 20-13 |
| Premiership Rugby | 2018/02/11 13:00 | Harlequins v Wasps | L | 22-44 |
| European Rugby Champions Cup | 2018/01/13 17:30 | Harlequins v Wasps | W | 33-28 |
| European Rugby Champions Cup | 2017/10/22 16:30 | Wasps v Harlequins | L | 41-10 |
| Premiership Rugby | 2017/09/17 14:00 | Wasps v Harlequins | W | 21-24 |
| Premiership Rugby | 2017/04/28 18:45 | Harlequins v Wasps | W | 32-13 |
| Premiership Rugby | 2016/10/02 13:30 | Wasps v Harlequins | L | 47-18 |
| Premiership Rugby | 2016/02/28 15:15 | Wasps v Harlequins | L | 42-10 |
| Premiership Rugby | 2015/10/16 18:45 | Harlequins v Wasps | W | 26-21 |
| Premiership Rugby | 2015/02/15 14:00 | Wasps v Harlequins | L | 37-6 |
| European Rugby Champions Cup | 2015/01/17 19:45 | Harlequins v Wasps | L | 3-23 |
| European Rugby Champions Cup | 2014/10/26 17:15 | Wasps v Harlequins | W | 16-23 |
| Premiership Rugby | 2014/09/20 14:00 | Harlequins v Wasps | W | 26-23 |