A team's casual comments? (6)
I believe the answer is:
asides
'casual comments?' is the definition.
'asides' can be an answer for 'comments?' (I have seen 'throwaway comments' mean 'asides' so perhaps 'comments' could also mean 'asides'). I am not certain of the 'casual' bit.
'a team's' is the wordplay.
'team's' becomes 'side's' (both can mean a sports team).
'a'+'sides'='ASIDES'
Can you help me to learn more?
(Other definitions for asides that I've seen before include "Stage whisper" , "Stage whispers" , "They're not heard by everybody" , "throwaway comments" , "Daises (anag.)" .)