A substitute ref in soccer
is not something I have
encountered, though I am
not naive enough to oppose
such a proposal, should it
be suggested.

But! if this so called alternative
ref intervened from the sideline
and tried to stop the game just
because he did not agree to a
decision, by which one team had
scored a fair goal? Hell breaks loose!!

                     <>

Brexit secretary met Labour MPs championing second referendum.
Guardian Headline 10th March 2019.