Confirms visiting cricket matches (7)
I believe the answer is:
attests
'confirms' is the definition.
(I've seen this before)
'visiting cricket matches' is the wordplay.
'visiting' becomes 'at'.
'cricket matches' becomes 'tests' (I've seen this in other clues).
'at'+'tests'='ATTESTS'
(Other definitions for attests that I've seen before include "Bears witness" , "Certifies" , "Sat test (anag.)" , "Gives evidence in court" , "Authenticates or affirms to be true" .)