Mexican former world champion Jaime Munguía is facing disciplinary action after his B-sample also tested positive for exogenous testosterone metabolites, confirming the result of an initial Voluntary Anti-Doping Association (VADA) test taken after his 4 May points win over France’s Bruno Surace in Riyadh. The British Boxing Board of Control, which regulated the event, is expected to rule on whether the decision is changed to a no-contest and on the length of any suspension. Munguía, ranked No. 3 at super-middleweight by the WBC, has submitted hair, nail and blood analyses and a list of supplements to support his claim of accidental contamination. The confirmation of Munguía’s case came as Matchroom Boxing disclosed that Francisco “Chihuas” Rodríguez returned an adverse VADA finding following his 21 June upset of Britain’s Galal Yafai for the WBC interim flyweight title in Birmingham. Rodríguez, whose tireless display produced a division-record 575 landed punches, now awaits separate inquiries by the BBBofC and the WBC and could be stripped of the belt or see the result annulled once his B-sample is examined. A third high-profile case emerged when the International Testing Agency reported that Russia’s unbeaten light-heavyweight Imam Khataev had tested positive for Clomifene in a sample collected last year, leading to a provisional suspension on 25 June that threatens his 13 July bout against Cuba’s David Morrell in New York. The cluster of positive results has prompted the WBC to open a broader review of anti-doping compliance, while several leading fighters and analysts warned of a growing performance-enhancing drug problem across the sport.