Preliminary period (3-2)
I believe the answer is:
run-up
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">preliminary period</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for run-up that I've seen before include "Cricketing approach?" , "Preliminary period" , "Bowler's approach?" , "Approach - preliminaries" .)