Not the winner (5)
I believe the answer is:
loser
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not the winner</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for loser that I've seen before include "Flop" , "Roles for a non-winner" , "one plays without success" , "Generally inept" , "Person who's a failure" .)