STATUS OF THE WBC WORLD SUPER LIGHTWEIGHT TITLE

DEFENSE – CHAMPION MATIAS V. CHALLENGER SMITH

On November 15, 2025, VADA notified WBC World Super Lightweight Champion Subriel Matías and the WBC of an adverse analytical finding consistent with the presence of Ostarine in a urine sample collected from him on November 9, 2025.

Ostarine is a selective androgen receptor modulator (“SARM”) that attaches to proteins in the human body and effectively tells muscles to grow.  Ostarine has been known to be used to aid performance by helping athletes build muscle mass and enhance their rate of fat loss and also to increase stamina and recovery ability.  Ostarine and all SARMs are banned substances at all times under the WBC CBP.

The WBC considered the following facts to be extenuating circumstances with respect to the measures taken in his case: (a) Champion Matías’s documented consumption of supplements known to be contaminated with Ostarine during the times relevant to the November 9, 2025, sample collection, which raised a reasonably probable explanation for the Adverse Finding.; (b) numerous adverse findings reported in credible scientific literature which have resulted from Ostarine-contaminated supplements, some of which including the same active ingredient(s) as the ones Champion Matías consumed; (c) the Adverse Finding’ reported levels of Ostarine, which were relatively low (0.85 ng/mL) and consistent with Ostarine-contaminate supplements; (d) Champion Matías’ report to VADA at the start of his training for his upcoming title defense and to the sample collectors of his ingestion of eight supplements, some of which are known to be Ostarine-contaminated; (e) his and his team’s cooperative and forthcoming postures; and (c) his agreement  to abide to the provisions of an Adjudication Agreement into which he and the WBC entered.

In the spirit of fair and expeditious resolution, the WBC and Champion Matías agreed that Champion Matías shall: (a) be placed on probation for one (1) year from the date of the sample collection; (b) undergo additional random anti-doping testing during the probationary period at his own expense; (c) pay for and participate in a nutrition education program designed and conducted by the WBC Nutrition Committee; (d) visit boxing gyms to speak about the dangers of consuming potentially contaminated nutritional supplements; and (e) be suspended indefinitely without further inquiry if he tests positive during his probationary period.

The terms of the WBC/Champion Matías’ Adjudication Agreement allow the January 10, 2026, defense of his WBC World Title to proceed as scheduled.