Ball balancers (4)
I believe the answer is:
tees
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ball balancers</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 tees that I've seen before include "Northern river" , "River in NE England" , "Starting places on the golf course" , "Middlesbrough's river" , "Golfer's equipment" .)