... matches entirely in draws (7)
I believe the answer is:
tallies
'matches' is the definition.
('tally' can be a synonym of 'match')
'entirely in draws' is the wordplay.
'entirely' becomes 'all' (I've seen this before).
'in' means one lot of letters goes inside another.
'draws' becomes 'ties' ('tie' can be a synonym of 'draw'**).
'all' placed inside 'ties' is 'TALLIES'.
(Other definitions for tallies that I've seen before include "Recordings" , "Reckons debt or score" , "Sums up" , "Agrees; scores" , "Counts, of votes say" .)