Some bowling outline as an excess of credit (9)
I believe the answer is:
overdraft
'excess of credit' is the definition.
'overdraft' can be an answer for 'credit' (overdraft credit is a kind of credit). I am unsure of the 'excess of' bit.
'some bowling outline' is the wordplay.
'some bowling' becomes 'over' (sequence of balls in cricket).
'outline' becomes 'draft' (synonyms).
'over'+'draft'='OVERDRAFT'
'as an' acts as a link.
Can you help me to learn more?
(Other definitions for overdraft that I've seen before include "Bank facility to spend more than you have" , "Bank borrowing" , "shows lack of balance" , "Excess withdrawal from bank" , "Bank facility to go into the red" .)