One show? You need a Referee (1); Judges are either three, or five (most often it's three, I believe). You need a Doctor present for checkups and for ringside exams.
You need an official time keeper. All of your corner people especially the lead person are supposed to be certified. Each boxer needs to be certified, doesn't matter that they are amateur. Consult with your local chamber of the USA/ABF or contact the United states Headquarters at Colorado Springs (tell them you are only looking for chicken feed information it might startle someone to begin taking the career seriously).
There are only two fighters in a boxing match.
The equipment needed for Boxing are boxing gloves, body protection, and the training equipment required for practice.
9 players in total
how many instruments were needed in pinpeat musician?
That is how many players is needed on a NHL team.
Singles or doubles.
9
9
12
12
9 players and 3 substitute in softball
12