Sports facility (5)
I believe the answer is:
arena
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sports facility</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for arena that I've seen before include "Where gladiators fought" , "Sit around here being entertained" , "Place of activity, especially conflict" , "theatre" , "Space for public events" .)