Sergio Martinez wins, but slips

5/7/2013 - Boxing

Who is the world's best fighter, regardless of weight class? Check out ESPN's top 10, which saw no movement this week despite Canelo Alvarez finally authoring a signature win. If you have a comment about the rankings, please use #ESPNP4P on Twitter.

Don't forget to check out Dan Rafael's divisional rankings, which are updated weekly.

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

Note: Results are through April 29.