Judge playing field booking (8)
I believe the answer is:
recorder
'judge' is the definition.
(historical type of judge)
'playing field booking' is the wordplay.
'playing field' becomes 'rec' (short for recreation ground).
'booking' becomes 'order' (I've seen this before).
'rec'+'order'='RECORDER'
(Other definitions for recorder that I've seen before include "Maybe video" , "Musical instrument or note-taker" , "found on the bench" , "Legal officer - wind instrument" , "Annalist" .)