On Wednesday, Conor Benn returned a "adverse analytical finding" for traces of a fertility drug, and the fight was canceled by the British Boxing Board of Control; both Benn and Eubank Jr wanted the fight to take place on Saturday.

Conor Benn's fight with Chris Eubank Jr on Saturday at The O2 has been canceled due to a failed drug test.

The Voluntary Anti-Doping Association revealed on Wednesday that a "adverse analytical finding for trace amounts of a fertility drug" was discovered in one of Benn's recent tests (VADA).

After promoters Matchroom Boxing and Wasserman Boxing issued a joint statement earlier in the day saying the fight would go ahead as planned, the British Boxing Board of Control announced the fight was "prohibited as it is not in the interests of boxing."

What we know about Benn's failed drug test
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The two fighters were already aware of the drug test results and were eager to continue with the fight, which follows their fathers' two fights in the 1990s, though it has been confirmed that their fight will no longer take place.

"After discussions with various parties, we have taken the decision to formally postpone the bout between Chris Eubank Jr and Conor Benn," Matchroom Boxing and Wasserman Boxing said in a joint statement.

"It is undeniable that the decision to withdraw sanctioning by the British Boxing Board of Control was procedurally flawed and lacked due process. We intend to pursue the legal issue between the promoters and the Board.

"However, while there are legal avenues available to ensure that the fight takes place as planned, we do not believe that pursuing those at this late stage is in the fighters' or the sport's best interests.

"As promoters, we take our obligations and duties very seriously, and a thorough investigation is now required. We will make no further comment at this time, and information about ticket holder refunds will follow."

Earlier in the day, Eddie Hearn used social media to rule out appointing an overseas governing body to sanction the fight, but he still believes it can be saved.

However, that prospect looked bleak when the lunchtime press conference was postponed twice and Benn left the hotel where he had been staying with his bags packed. Soon after, the undercard fighters arrived.

To continue the family feud into a trilogy fight, the sons agreed to a catchweight of 157 pounds, which meant Benn would have to move up two weight divisions and Eubank would have to lose three pounds.

UKAD: Failed test 'a source of concern'

Jane Rumble, CEO of UK Anti-Doping (UKAD), stated: "UKAD is concerned about the report of a failed VADA test by boxer Conor Benn. UKAD investigates all doping reports and encourages anyone with information on suspected doping activity to come forward and share it with us."

In the run-up to the scheduled fight, Benn insisted he is a "clean athlete" and expressed hope that the catchweight match would still take place during Wednesday's live open workout.

"I haven't committed any violations, and I haven't been suspended," Benn said during the workout. "I've signed up for every voluntary anti-doping test under the sun; I've been tested throughout my entire career, and I've always come back negative; I've never had any issues before."

"My team will investigate why there was an initial negative finding in my test." I'm a clean athlete, and we'll figure this out."