A referee is a person who ensures fair play and enforces the rules during a sports game or competition. They make sure that all players follow the rules and settles any disputes that may arise. Full definition
A marriage counselor sometimes has to take on the role of referee and needs to be able to be objective and ensure that no one feels that the counselor is taking sides. (marriagecounselingblog.com)
Therefore, the role of the judge will be critical as referee in ensuring that all parties work to the spirit of the process. (newlawjournal.co.uk)
I am not saying that we should also be not punished by referee for our mistakes, but it should be fair for all the teams. (justarsenal.com)