Gentlemen, and especially fans of Floyd Mayweather Jr.,

I have a couple of questions for you. In prepartion for the big Mayweather fight this weekend, I read a few articles from respected websites on the man from Grand Rapids, Michigan. Check Doug Fisher's mailbag this week on the Ring Magazine's Website for an example. The articles suggest that Floyd Mayweather Jr. has left a number of meaningful fights on the table in his career. Some of the missed fights were from when he was promoted by Bob Arum, and others from his post-Arum era. There are probably very good reasons why he didn't engage in bouts with the guys below during his rise to the top of the p4p list. Of course, they still didn't happen. Will people educate me on why each of these fights didn't get made?

Acelino Freites (1999-2002)
Joel Casemayor (same era)
Steve Johnson (same era)
Vivian Harris (2003-2005)
Kosta Tszyu (2003- 2005)
Antonio Margarito (2006-2007)
Miguel Cotto (2007-200
Paul Williams (200
Winky Wright (2009)
Manny Pacquiao (2010 - 2012)
Sergio Martinez (2012)

Now many people claim that Floyd is a top-25 all-time great fighter. Can someone provide me with a historical comparison of other top-25 all-time great boxers with regard to the boxers they arguably missed? For example, Roberto Duran, Ike Williams, Joe Louis, Benny Leonard? Did they miss as many boxers in their career? Is it not uncommon amongst the best to have that many misses? Or is it uncommon? I understand there may be reasons for it e.g. the eras are different in terms of how many professional fights a fighter has over his career, and that economics are different etc.

Thank you for your help.

Disclaimer: I have no intention of suggesting that Floyd hasn't had an amazing carreer, or that he hasn't had great wins, such as Castillo II, Oscar De La Hoya, and Diego Corrales etc.