Absurd score -- around 100 -- for such a game (6)
I believe the answer is:
soccer
'such a game' is the definition.
(soccer is a kind of game)
'absurd score around 100' is the wordplay.
'absurd' indicates anagramming the letters.
'around' means one lot of letters goes inside another.
'100' becomes 'c' ('C' can be a synonym of '100').
'score' with letters rearranged gives 'socer'.
'socer' going around 'c' is 'SOCCER'.
'for' is the link.
(Other definitions for soccer that I've seen before include "The beautiful game?" , "... players playing this (colloquially)" , "popular game" , "Football for Americans?" , "American football?" .)