Fold white line for batter (6)
I believe the answer is:
crease
This could be a double definition.
'fold white' is the first definition.
'crease' can be an answer for 'fold' (creasing is a kind of folding). I am not certain of the 'white' bit.
'line for batter' is the second definition.
'crease' can be an answer for 'line' (I've seen this before). I'm not sure about the 'for batter' bit.
Can you help me to learn more?
(Other definitions for crease that I've seen before include "Fold in clothing" , "Wrinkle or pressed line" , "batsman reaching it" , "Line made by folding" , "Furrow, wrinkle" .)