Valencia suffered the injury during a training session. A recovery timeline was not indicated.
The 25-year-old was signed last January from Colombian side Deportivo Cali through 2024 with an option for 2025. The midfielder has one assist in nine league appearances (two starts), with Daniel Pereira, Alex Ring and Sebastian Driussi often their preferred midfield trio in a 4-3-3 formation.
ATX, now in their second MLS season, enter MLS Week 15 sitting fourth in the Western Conference standings.