| 30.10.19 | CF Pachuca [U20] | - | CF Monterrey [U20] | 2:3 |  |
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| 03.11.21 | CF Pachuca [U20] | - | Atlético San Luis [U20] | 1:3 |
| 30.10.19 | CF Pachuca [U20] | - | CF Monterrey [U20] | 2:3 | |
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| 03.11.21 | CF Pachuca [U20] | - | Atlético San Luis [U20] | 1:3 |
| William Sergio Mejía Castillo | |
| geboren in: | 21.04.1999 |
| geboren te: |
Monterrey, 
Mexico |
| nationaliteit: |
Mexico
|
| Lengte: | 183 cm |
| Gewicht: | 84 kg |
| Positie(s): | Verdedigende middenvelder Centrale middenvelder |
| Sterke been: | rechts |