- David Haye v Dereck Chisora
Chisora reacts angrily to drug accusations
Dereck Chisora has hit back at anyone who has suggested he takes performance-enhancing drugs ahead of his heavyweight fight against David Haye.
Chisora is due to fight Haye in a grudge match at Upton Park on Saturday, but suspicion was cast upon him after one of his coach's other fighters, Ali Adams, failed a recent drugs test.
However, Chisora insists that he fights clean - and always has done.
"Anyone who suggests I am on something couldn't be further from the truth," Chisora said.
Chisora's trainer, Don Charles, worked with Adams ahead of his bout against Audley Harrison last month - before the 30-year-old tested positive for a performance-enhancer.
"I know the finger of suspicion will now be pointed at Dereck but you can test him any day, anywhere and anyhow and the result will be the same," Charles told the Sun. "He is not taking any kind of performance-enhancing drug when he is a natural heavyweight who is experienced at the highest level.
"Even if he has a headache, he will ask if it is okay to take a pill. He knows the drug testers can knock on his door at any time.
"Just a couple of days ago, they turned up and his house unannounced and he was more than happy to accommodate their request.
"Dereck has fought for world titles and had other high-profile bouts, he knows what testing involves and has never had a problem."
Testers were tipped off about Adams by his opponent, Harrison, whose suspicions were raised after an oddly-aggressive pre-fight press conference. Charles insists he was never aware of Adams' activities and felt betrayed by the fighter.
"When I was told about Ali's positive test I was shocked, disappointed and disillusioned. I had become emotionally involved with Ali," he said. "I insisted on seeing him afterwards and he could not look me in the eye. He admitted to me that he had taken some kind of PED.
"Ali was pushing Audley at the press conference and that is not normal behaviour for him. it was just too aggressive. I suppose Audley's experience fighting around the world alerted him.
"People will say that because I was his trainer that I must have known he was taking something but I didn't.
"If I had known or had any inclination then I would have stopped Ali doing it."