Khan signs on to fight Floyd

[Master]

If it happens, it'll be Mayweather's 1st legitimate KO in 7 years RE 2007 Hatton fight.

(unless you fellas count the Ortiz cheap shots in 2011)

I count the Ortiz KO as he brought it on himself.

Therefore it does not count. Hatton also knocked himself out with his stupidity after the point deduction.