Sometimes it’s called the art of refereeing, and it does not matter how experienced you and the teams involved are, it’s the unexpected that will always catch you out. Not just at your local league match but also on the world stage. The FIVB documents all of these events in the Volleyball Casebook and the 2024 edition is now available.
Where available, these events also have the corresponding video of the incident. It’s well worth a look: https://www.fivb.com/-/media/2024/referee/casebook-2024.pdf
