Floyd on top; Castillo, Hatton need to fight each other

Floyd Mayweather remains Mr. Pound-for-pound; meanwhile, Ricky Hatton and Jose Luis Castillo fight Jan. 20 -- but not each other. Dan Rafael rates 'em in his January P4P rankings.

Originally Published: January 11, 2007
By Dan Rafael | ESPN.com
Who is the world's best fighter, regardless of weight class? See my top 20 below.

Click here for my division-by-division rankings, from heavyweight to strawweight.

For a list of the current champions in all weight classes, click here.

The rankings are updated on the second Thursday of each month.

Note: Results through Jan. 11.