Man coming back scores freely in game (8)
I believe the answer is:
lacrosse
'in game' is the definition.
(I've seen this before)
'man coming back scores freely' is the wordplay.
'man' becomes 'al' ().
'coming back' says the letters should be written in reverse.
'freely' indicates an anagram.
'al' written backwards gives 'la'.
'scores' is an anagram of 'crosse'.
'la'+'crosse'='LACROSSE'
(Other definitions for lacrosse that I've seen before include "Score's uncertain after the Spanish" , "Game played with a netted stick" , "Sport played with sticks" , "Game played with nets on sticks" , "Like thirteen of the other clues in the French" .)