https://www.bbc.co.uk/sport/football/66612570
Former Premier League referee Mike Dean failed to correct a mistake in a match to save his friend and fellow official Anthony Taylor from extra "grief".
"I said to Anthony afterwards: 'I just didn't want to send you to the screen after what has gone on in the game'.
"I didn't want to send him up because he is a mate as well as a referee and I think I didn't want to send him up because I didn't want any more grief than he already had."