Tidy golfers replace it (5)
I believe the answer is:
divot
(Other definitions for divot that I've seen before include "Piece of turf dislodged by golf club" , "Piece of turf dug out of a lawn" , "Turf golfer dislodges" , "Piece of turf dug out by a golf club" , "Piece of turf dug out of the fairway by a golf shot" .)