In a way, that Jack Grealish insisted on playing on said it all. Even though he instantly knew the injury was muscular, and had been thumping the turf in agony, he wanted to give it another go.
Against the wishes of Pep Guardiola, who appeared to be telling the winger that he had nothing to prove and not to do any further damage. In the end, Grealish lasted another 90 seconds before begging Manchester City team mates to boot the ball into the stand so he could join it.
Guardiola is right and wrong with that assessment.