Sporting official (3)
I believe the answer is:
ref
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sporting official</span>' is the definition.<br/ ><span class="explanation-format__explanation">(short for referee)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ref that I've seen before include "Middleman needing cards" , "Sports umpire" , "In brief, he controls a soccer match" , "One traditionally in black" , "Football's whistler" .)