Head to Head
| England U23 Development League | 2021/02/09 13:00 | Cardiff U23 v Colchester U23 | W | 4-1 |
| England U23 Development League | 2020/11/28 11:00 | Colchester U23 v Cardiff U23 | L | 2-0 |
| England U23 Development League | 2020/01/13 13:00 | Cardiff U23 v Colchester U23 | W | 2-1 |
| England U23 Development League | 2019/10/21 12:00 | Colchester U23 v Cardiff U23 | W | 0-2 |
| England U23 Development League | 2019/01/21 13:01 | Colchester U23 v Cardiff U23 | L | 2-1 |
| England U23 Development League | 2018/04/12 13:00 | Cardiff U23 v Colchester U23 | L | 0-1 |
| England U23 Development League | 2018/03/29 12:00 | Colchester U23 v Cardiff U23 | W | 0-3 |
| England U23 Development League | 2017/04/10 12:00 | Colchester U23 v Cardiff U23 | D | 1-1 |
Home History
| England U23 Development League | 2021/05/03 14:00 | Barnsley U23 v Cardiff U23 | D | 1-1 |
| England U23 Development League | 2021/04/27 12:00 | Cardiff U23 v Coventry U23 | L | 1-6 |
| England U23 Development League | 2021/04/23 18:00 | Nottm Forest U23 v Cardiff U23 | W | 1-2 |
| England U23 Development League | 2021/04/13 12:00 | Cardiff U23 v Sheff Utd U23 | L | 0-2 |
| England U23 Development League | 2021/03/30 12:00 | Cardiff U23 v Wigan U23 | W | 6-1 |
| England U23 Development League | 2021/03/22 19:00 | Birmingham U23 v Cardiff U23 | L | 2-1 |
| England U23 Development League | 2021/03/16 14:00 | QPR U23 v Cardiff U23 | L | 1-0 |
| England U23 Development League | 2021/03/09 13:00 | Cardiff U23 v Watford U23 | W | 4-0 |
Away History
| England U23 Development League | 2021/05/07 12:00 | Colchester U23 v Swansea U23 | D | 1-1 |
| England U23 Development League | 2021/05/03 12:00 | Coventry U23 v Colchester U23 | L | 2-1 |
| England U23 Development League | 2021/04/26 12:00 | Colchester U23 v Hull U23 | L | 1-2 |
| England U23 Development League | 2021/04/20 12:00 | Sheff Wed U23 v Colchester U23 | L | 2-0 |
| England U23 Development League | 2021/04/07 12:00 | Colchester U23 v Wigan U23 | L | 1-2 |
| England U23 Development League | 2021/03/26 13:00 | Colchester U23 v Millwall U23 | L | 2-3 |
| England U23 Development League | 2021/03/22 13:00 | Crewe U23 v Colchester U23 | L | 2-0 |
| England U23 Development League | 2021/03/02 12:00 | Colchester U23 v Bristol City U23 | L | 1-2 |