Set aside bowling regulation? (8)
I believe the answer is:
overrule
'set aside' is the definition.
(I've seen this before)
'bowling regulation?' is the wordplay.
'bowling' becomes 'over' (cricket term).
'regulation?' becomes 'rule' (regulation is a kind of rule).
'over'+'rule'='OVERRULE'
(Other definitions for overrule that I've seen before include "Disallow by using one's superior authority" , "Veto" , "Don't allow" , "Countermand" , "Reverse another's decision" .)