Davis Cup teams will no longer have to play a fifth match if one side already has an unbeatable 3-1 lead.
The International Tennis Federation announced the new ''dead rubber'' rule on Wednesday ahead of this weekend's World Group first-round matches.
Under the change, if one team clinches victory in the best-of-five series after the fourth match on Sunday - the first reverse singles - and that match lasted at least four sets, the captains can agree to scrap the second reverse singles.
However, all five matches still have to be played if a team earns an unbeatable 3-0 lead after Saturday's doubles, or the tie is decided after the fourth match which has gone only three sets. All ''dead rubbers'' will continue to be played over best-of-three tiebreaker sets.
