Watching Pep Guardiola watch this Champions League semi-final thriller, in which a healthy first-leg lead appeared on for his Manchester City team at various points, was to witness a manager in the grip of agony.
He was incandescent when Riyad Mahrez lashed into the side-netting with Phil Foden on for the square pass in front of goal. That could have been 3-0 for City after 26 minutes.
