Argentina's Facundo Bagnis, 36 and a former world number 55, has accepted a 12-month suspension under tennis's anti-doping rules. The player tested positive for hydrochlorothiazide, a diuretic and masking agent, during qualifying for the 2025 US Open, a result that set in motion a lengthy review of how the substance entered his system while he competed at the lower levels of the game.
The ITIA judged the violation to be unintentional: Bagnis showed the substance came from a contaminated supplement, providing detailed records and documentation in support. The player had already entered a voluntary provisional suspension on 18 October 2025 while the investigation proceeded, a step that shortened the effective time out of competition and reflected his willingness to cooperate fully with the process from the outset.
The sanction was formalised on 13 July 2026. Bagnis, whose professional career is already in its closing phase, pays the price for an involuntary contamination that the rules nonetheless treat as an offence regardless of intent to cheat, a reminder of how strictly liability is applied.
