United involved in nil-nil draw? That's better (5)
I believe the answer is:
outdo
'that's better' is the definition.
(thesaurus)
'united involved in nil-nil' is the wordplay.
'united' becomes 'utd' (common abbreviation as in names of sports teams).
'involved in' means one lot of letters goes inside another.
'nil' becomes 'o'.
'nil' becomes 'o'.
'o'+'o'='oo'
'utd' put inside 'oo' is 'OUTDO'.
'draw?' is the link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for outdo that I've seen before include "Surpass someone at something" , "Overtake" , "Defeat" , "Get the better of" , "Overcome" .)