Floyd Mayweather Jr. .Vs. Mickey Walker @ 147

I wouldn't say that retirement necessarily voids ones lineage claim. Judah pretty much established himself as the best welterweight at the time when he beat Spinks.

However in the grand scheme of things, neither Judah or Baldomir will go down as a great opposition for Mayweather. Despite besting Spinks, Judah was never able to establish himself as one of the best welterweights of the era. He will be known for his losses to Baldomir, Mayweather, Cotto and Clottey more so than that one win he had. Baldomir is a success story and a bit of a fluke, he got the right champ at the right time. Neither were truly among Cotto, Margarito, Mosley who are the best welters in recent times.

As for Mickey Walker not having a jab, well he won one of his biggest fights against Ace Hudkins with only the use of a jab. He didn't jab with Tommy Louhgran but that doesn't mean he didn't have a jab.

The man went to a draw with Jack Sharkey, who was one of the most talented heavyweights of the era and considered probably the best at the time, since that he had handed out a beating to the champion Schmeling before hitting him low and being DQ'd. Sharkey was not some plodding wildman, he had all the skills of a welter/middleweight, and so must have had Walker too in order to be able to compete with this man.

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There he is, throwing a jab.

Aggressive pressure fighters in general have a hard time moving up in weight since they rely on their advantages in punching power and strength, unless they have skills. Walker couldn't have been able to compete with light heavyweights or heavyweights if he had no skills.