Answer:
Dead rubber is a term used in sporting parlance to describe a match in a series where the series result has already been decided by earlier matches. The dead rubber match therefore has no effect on the winner and loser of the series, other than the number of matches won and lost. The term is widely used in Davis Cup and Fed Cup tennis, as well as in international cricket and field hockey series. Its origin is however probably from the card games contract bridge and rubber bridge. For example, in Davis Cup series', each pair of competing countries play five matches (rubbers) where the winner is decided on a best-of-five basis. Where the result is known before the completion of the five matches (if one side wins three matches), the remaining match or matches are said to be dead-rubbers.
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