'In no way should I ever have said she did it purposely' - Serrano apologises to Taylor

Amanda Serrano, right, butts heads with Katie Taylor during their undisputed super lightweight title bout.

Amanda Serrano has acknowledged her misjudgment in accusing Katie Taylor of purposely headbutting her in their rematch at the AT&T stadium in Texas.

Bray boxer Taylor retained her titles by edging a very close bout where judges Jeremy Hayes (Canada), Nate Palmer (Indiana) and Jess Reyes (Texas) all scored the contest 95-94, but Serrano - who suffered a cut above her right eye - fumed at Taylor's use of the head post-fight.