Allan Green has accused Andre Ward of ducking him after their Super Six World Boxing Classic bout was postponed.

Ward, 25, has called the April 24 fight off after suffering a knee injury, denying Green (29-1) a chance to challenge for the WBC super-middleweight title.

Ward (20-0, 13 KOs) had surgery on his right knee last year, and it gave out during training camp, forcing the former Olympic gold medalist to postpone the bout which was scheduled for his home town of Oakland, California.

But Green, added to the super middleweight tournament last month as a replacement for Jermain Taylor, believes Ward is just making excuses.

"I honestly don't think he will ever get in the ring with me. I don't think this is a fight Andre Ward and his people ever wanted," said Green.

"If I had it my way he'd take a cortisone shot and fight on April 24. I seriously doubt he's ever going to fight me. I hope it's valid, because there's been a lot put into this from everybody involved and there's no time to play games.

"If he were fighting Jermain Taylor or Sakio Bika, I'm sure he'd be good to go right now. I'm a fighter. I fight through bumps, bruises and injuries and we go through that.

"I fought Tarvis Simms with a bad right shoulder. If you're knee keeps getting hurt it could be something chronic and you're probably not going to be ready in six weeks.

"If your knee is swollen, just take a cortisone shot, stop bitching and get your ass in the ring."

But Ward, who won his opening fight of the tournament against Mikkel Kessler who faces Notingham's Carl Froch next month, insists he wants to be back in the ring as quickly as possible.

"I don't think Allan Green and his team realise how bad I want this fight," he said. "They will get the fight as soon as a new date is rescheduled.

"I'm a pretty straight forward person and there is no gray area with me so if I say there's something wrong with my knee, then that's just what it is.

"I'm a champion and I've proven throughout my career - in both the amateurs and professional ranks - that I have no problem fighting the best.

"Everything is fine with my promotional and management team, and any negotiations that are going on are business as usual.

"I look forward to getting back in the ring at 100% and defending my WBA title in the Super Six World Boxing Classic."