He scored 100 batting in international trophy, making comeback (7)
I believe the answer is:
puccini
'he scored 100 batting' is the definition.
The definition suggests a singular noun which matches the answer.
'in international trophy making comeback' is the wordplay.
'international' becomes 'ic' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'trophy' becomes 'cup' (cup is a kind of trophy).
'making comeback' shows that the letters should be reversed in order.
'in'+'ic'+'cup'='iniccup'
'iniccup' written backwards gives 'PUCCINI'.
Can you help me to learn more?
(Other definitions for puccini that I've seen before include "Scorer" , "Italian composer of Madam Butterfly" , "Madame Butterfly composer" , ""Tosca" composer, Giacomo" , "bar worker" .)