Frederico Ferreira Silva, sanctioned for one month for doping due to contaminated medication

Controversy arises in any doping case, especially when it bears similarities to recent high-profile incidents. In this instance, Frederico Ferreira Silva, a Portuguese player, received a one-month suspension for doping due to a contaminated medication, testing positive for trimetazidine: "The ITIA acknowledged the positive test resulted from contamination of a prescribed, regulated medication, thus the violation was not intentional".

Portuguese tennis player Frederico Ferreira Silva has accepted a one-month suspension under the Tennis Anti-Doping Programme.

— International Tennis Integrity Agency (@itia_tennis) September 24, 2025

This is an automatic translation. You can read the original news, Frederico Ferreira Silva, sancionado un mes por dopaje por un medicamento contaminado