Table tennis (4-4)
I believe the answer is:
ping-pong
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">table tennis</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ping-pong that I've seen before include "A type of table tennis" , "Table-top game" , "27 ac tennis" , "Sport played on a table" .)