Why does one team beat another? Untangling the reasons for the outcome can be a fascinating business, because often three factors work together to form the final result; technical, psychological and plain old luck.
Take, for example, Sevilla’s 3-1 win over Liverpool in the recent final of the Europa League.
While they were in the first half ascendancy, Liverpool could have been awarded one, or even two penalties.
To this extent, luck was against the...