Round figure recorded every so often playing cricket? (6)
I believe the answer is:
I believe this clue is a double definition.
'round figure' is the first definition.
(a visually round figure)
'recorded every so often playing cricket?' is the second definition.
(as in a score of zero in cricket)
(Other definitions for nought that I've seen before include "Poetically nothing" , "The figure 0" , "Love" , "Nil" , "duck" .)