Court star Lendl (4)
I believe the answer is:
ivan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">court star lendl</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 ivan that I've seen before include "Russian ruler - a Terrible one" , "his progress in history was terrible!" , "First tsar of Russia" , "'Terrible' emperor of Russia" , "Fellow" .)