Betting odds (5)
I believe the answer is:
evens
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">betting odds</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 evens that I've seen before include "Chances" , "Exchange, substitute" , "Bookies' odds matching the amount staked" , "In betting, winning the amount staked" , "Level betting" .)