Racing official (7)
I believe the answer is:
steward
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">racing official</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 steward that I've seen before include "Sporting event supervisor" , "Flight attendant" , "Maritime waiter" , "Caretaker" , "Ship/aircraft worker" .)