Question about the Judah low blow on Mayweather

I don't understand why it wouldn't be a DQ or no contest.

you have to continue after 5 minutes I believe so if Floyd wasn't able to continue, Judah would've got the win? That's messed up. Obvious intentional low blows like that should be automatic disqualifications, not some stupid 1 point deduction. Otherwise people could just use that in a desperate attempt to win

http://x11.putfile.com/4/9815384641.gif it's the 'ol brooklyn 1-2, hahahahahahaaha great combo.

http://x11.putfile.com/4/9815384641.gif So fucking vicious.

http://x11.putfile.com/4/9815384641.gif

You can't win a title "anymore" by disqulification - though i can't explain by Montell Griffen was able to get the title. But the rule was implanted when Juan Coggi and Luis Santanna both won the title by disqualification, when it was apparent that they could go on but refused too.