Matchroom Boxing said in a statement: “Today the Voluntary Anti-Doping Association informed Matchroom, the World Boxing Council and the British Boxing Board of Control that Francisco Rodriguez has returned an adverse analytical finding as part of a post-fight night anti-doping test following his bout with Galal Yafai on June 21, 2025.

“The matter will be handled by the BBBofC and the WBC.”

The loss was Yafai’s first in 10 pro fights, while Rodriguez has 39 pro wins and six losses, with one draw and a no contest.

BBC Sport has contacted the BBBofC and Vada for comment.