Briton Dalton Smith’s world-title problem towards WBC light-welterweight champion Subriel Matias stays on, regardless of the champion returning opposed drug-test findings.

The Puerto Rican examined constructive for the banned substance Ostarine in a Voluntary Anti-Doping Affiliation (VADA) out-of-competition check taken on 9 November.

A ‘B’ pattern additionally returned an opposed discovering, however the New York State Athletic Fee (NYSAC) says the focus detected was beneath the brink utilized by main boxing jurisdictions, which means the battle in New York on 10 January can proceed.

“The New York State Athletic Fee is conscious that Mr Matias, who’s at present licensed, has obtained an opposed analytic discovering from VADA regarding an out of competitors check,” the fee advised BBC Sport.

“The reported focus was beneath the relevant threshold utilized by a number of jurisdictions, together with Nevada, California, and New York.”

The fee added that Matias has been cooperative however that the scenario stays beneath evaluation and he might be topic to further testing.

It added: “Presently the battle is scheduled to proceed on 10 January 2026.”

Ostarine, a non-steroidal drug used to help muscle development, has been on the World Anti-Doping Company’s banned substance record since 2008.

Following the preliminary A-sample discovering, the WBC stated it had recognized mitigating elements in Matias’ case.

The sanctioning physique indicated the opposed consequence was linked to the fighter’s use of dietary supplements identified to hold a threat of Ostarine contamination, including that the degrees detected had been low and per unintentional ingestion.

Nevertheless, the organisation has positioned him on a 12-month probation interval.

The WBC additionally warned that any additional constructive check throughout the probationary interval would lead to an indefinite suspension, pending additional investigation.

Sheffield’s Smith, 28, has received all 18 of his skilled bouts, and his group have stated he won’t pull out of the competition.

Matias, 33, has 23 wins and two defeats on his document.