| Zeitraum | Name | Starts | Siege |
|---|---|---|---|
| 2018–2018 | X-Factorv. Tangelo van de Zuuthoeve | 3 | 0 |
| 2023–2023 | Xalio Momo | 2 | 0 |
| 2016–2016 | Xamira | 1 | 0 |
| 2014–2015 | Xanakav. Cadeau | 21 | 4 |
| 2011–2011 | XCC-Pilgrimv. Xequoia's Croeso Cymreig | 3 | 0 |
| 2013–2016 | Xentisv. Connery | 18 | 1 |
| 2021–2022 | Xerez | 3 | 0 |
| 2013–2014 | Xersinav. Emilion | 10 | 0 |
| 2012–2012 | XF Selectedv. Chapman | 3 | 0 |
| 2022–2022 | Xilli | 1 | 0 |
| 2016–2016 | Xionv. Michelangelo | 1 | 0 |
| 2014–2020 | Xipov. Manilha | 4 | 0 |
| 2014–2022 | XO | 15 | 1 |
| 2014–2014 | XXXL Fairytale OLDv. Fidertanz | 2 | 1 |
| 2017–2017 | XXXL Rubinio NRWv. Rubin-Royal | 2 | 0 |