Pep Guardiola reportedly once claimed: "There is nothing more risky than not taking any risks."
Some would argue his rival Jurgen Klopp found that out the hard way, with his handling of Sadio Mane, which is in complete contrast to the way Guardiola runs things at Manchester City.
Moments define matches, seasons and even legacies. The ability to recognise when a player isn't pulling quite as hard in the same direction as his teammates is part of what makes great managers truly great. It can be a sliding doors moment, get it wrong and your side can suffer repercussions that hinder them in the long run.
