Cricket interval: one team munched Spam? (8,4)
I believe the answer is:
'spam?' is the definition.
(spam is a kind of luncheon meat)
'cricket interval one team munched' is the wordplay.
'cricket interval' becomes 'lunch' (cricket has scheduled breaks for meals).
'munched' is an anagram indicator (letters munched or crushed into a new order).
'oneteam' is an anagram of 'eonmeat'.
(Other definitions for luncheon meat that I've seen before include "Spam" , "Pre-cooked and preserved loaf of pork, say" .)