By Chris LaBate

WBA/IBF junior welterweight champion Amir Khan is taking no prisoners. The British superstar lashed out at several of his recent critics. The first boxer on Khan's verbal junior welterweight hitlist - is WBA "regular' champion Marcos Maidana. Khan won a close decision over Maidana in 2010, a clash which received "Fight of The Year" honors. 

Khan attacked Maidana over turning down the opportunity to fight Erik Morales in a rematch on September 17 on the Floyd Mayweather-Victor Ortiz card in Las Vegas. The vacant WBC title would have been within Maidana's grasp, who won a close decision over Morales in April, but already had a fight scheduled in Argentina on September 23rd when he was approached with the opportunity to face Morales.

"Wow, Maidana refuses to fight Morales on the Mayweather/Ortiz card. I'd jump at that chance. how could you say no to the WBC world title? And I know Maidana never wanted to give [Victor] Ortiz a rematch too."

WBO champion Timothy Bradley received some verbal leather as well. Khan continues to bait Bradley to fight him on December 10th, the scheduled return date for the British fighter. Their negotiations for a July unification fell apart earlier this year, and Bradley has since been sued by his former promoters Gary Shaw and Thompson Boxing.

"Bradley will always be a b*tch but if he decides to grow some balls and fight me in December - I'll give him the respect for stepping up before I b*tch slap him all over the ring for making me wait."

A few days ago Mayweather was asked if was willing to face Khan. The former five division champion advised Khan to fight unbeaten Jessie Vargas before being considered. Vargas is promoted by Mayweather. And Khan has advised Vargas to fight Maidana.

"Never heard of Jessie Vargas until Floyd Mayweather mentioned that I have to fight him. He looks good, yes, but only has 16 fights. He's a prospect and I'm a unified world champion. If Jessie Vargas fights and gets past Marcos Maidana - then I'll fight him. Like Floyd said - 'you have to earn it.'