Let's be clear, this is entertainment.
Context is important when you consider the rules of engagement.
How does the fight end?
Normally the ref steps in and ends it.
Here is what you know before the "fight":
- date and time in the future
- who you are fighting with time to research
- fighting someone of equal skill
- someone of equal weight
And what you'll know won't happen:
- weapons will not be used
- facing against more than 1 opponent