Tennis ranking (4)
I believe the answer is:
seed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">tennis ranking</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 seed that I've seen before include "one with potential to grow up?" , "Propagative part of plant" , "Progeny" , "High-rated tennis player" , "It can develop into a plant" .)