By Rick Reeno

Before he even steps in the ring on Saturday night, WBA 'regular' welterweight champion Keith 'One Time' Thurman (25-0, 21KOs) has been ruled out as a potential September 12th opponent for WBC/WBA full champion Floyd Mayweather Jr. (48-0, 26KOs).

Mayweather has mentioned the likes of Andre Berto and Karim Mayfield as possible candidates for the fall. Very few (if any) expect either man to secure the assignment. A more likely opponent is former champion Amir Khan (31-3, 19KOs) of Bolton.

September 12th is just around the corner. Could Thurman actually make such a quick turnaround?

"Yes I could, especially if it ends early. If it's an early knockout I definitely could," Thurman said.

But, Mayweather Promotions CEO Leonard Ellerbe recently stated that 'nobody is even thinking about' Thurman.

"I want him whenever he wants me. Whenever he's ready. I think it's a fan friendly fight. I have one opponent that's in common with Mayweather right now, Robert Guerrero. And I look forward to having many other opponents in common with Mayweather, so I can show how I look in the ring in comparison with some of the other top welterweights," Thurman said.