Surprising delivery from saint bearing a cross returned (6)
I believe the answer is:
doosra
'surprising delivery' is the definition.
'doosra' can be an answer for 'delivery' (I've seen this before). I'm unsure of the 'surprising' bit.
'saint bearing a cross returned' is the wordplay.
I cannot really understand how this works, but
'saint' could be 's' and 's' is present in the answer.
'a' is within the answer.
'cross' could be 'door' (a door is a kind of cross) and 'door' is found within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'from' acts as a link.
Can you help me to learn more?
(Other definitions for doosra that I've seen before include "special delivery" , "Ball that spins" .)