The difference in injury time between Sunday's FA Cup quarter-final involving West Ham United and Leeds, and Manchester City's 4-0 win over Liverpool a day earlier was stark.

While Craig Pawson added 11 minutes on at the London Stadium, allowing the hosts to come from 2-0 down in that period to force extra time and a penalty shootout, Michael Oliver did not add on a single second in the tie at Etihad Stadium.

Social media was awash with supporters asking how Oliver could just ignore the laws of the game and choose to play no added time.

After all, there were two goals and six stoppages for substitutions in a game that that was eventually settled 4-2 on penalties in Leeds' favour.

But it is far from unusual in cup games where a match is effectively over.

A couple of years ago Pierluigi Collina, Fifa's head of referees, was talking about added time and when it might be acceptable to cut it short.

The Italian made a good point. He said in cup ties...