Floyd Mayweather Sr. adamantly denies attacking a woman after the Gennady Golovkin-Canelo Alvarez fight ... pleading not guilty to a battery charge in a Las Vegas court.
In case you missed it ... cops say Sr., 65, got into a heated confrontation outside T-Mobile Arena after the fight. They say Sr. grabbed the woman before punching her in the leg.
Sr. was charged with battery and a warrant was issued for his arrest.
Floyd turned himself Tuesday ... and the warrant was canceled. On Thursday, Sr.'s attorney appeared before a Vegas judge ... and pled not guilty on Mayweather's behalf.
As we previously reported, FM Sr.'s rep told us he's totally innocent ... and never laid a hand on the alleged victim.
Mayweather Sr. is due back in court March 27.
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