They eliminate deciding games (7)
I believe the answer is:
rubbers
'they' is the definition.
Both the answer and definition are plural nouns.
Perhaps you can see an association between them that I don't see?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for rubbers that I've seen before include "sections of bridge" , "Many sets of tennis" , "shoes?" , "They remove lead" .)