Track and field competitor (7)
I believe the answer is:
athlete
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">track and field competitor</span>' is the definition.<br/ ><span class="explanation-format__explanation">(someone competing in track and field events)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for athlete that I've seen before include "Sportsman in physical contests" , "Track performer" , "One good at sports" , "One who's good at sport" , "Track/field sportsman" .)