I'm an avid boxing fan but as of late Ive been questioning the legality of the sport from an Islamic perspective. We've got to understand Boxing is a dirty business, boxers are often disrespectful during the build up to a fight (Mainly to build Hype and promote the fight), there's lots of arrogance being displayed and to top it all off things get violent once they step into the squared circle.
Watching two men insult and hurt one other isn't something a Muslim should find entertaining..rather its zulm (Cruel) and should be found deplorable. As Muslims were forbidden to even raise our hands to anyone and in boxing they throw devastating punches to the head/body which have a negative impact to the brain. (Slurred speech is one sign a boxer has been hit way too often)
Whether watching Boxing is allowed or not..that's a question only a Mufti or an Islamic Scholar can answer but personally i believe its wrong..and a Female watching Boxing is like a man watching Women's Tennis (Football or whatever sport) its completely wrong as were told to lower our gaze and I assume it applies to Women also.
Boxing to train and keep fit is great (Hitting the bag/mitts, running, skipping etc etc) but watching fighters slug it out and damage each other is distasteful. Allah knows best