Ramirez of tennis (4)
I believe the answer is:
raul
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ramirez of tennis</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for raul that I've seen before include "Castro" , "Fidel's younger brother and successor" .)