Novak Djokovic is brought in to replace Janko Tipsarevic as Sweden battle to keep their Davis Cup quarter-final alive going into the final day.
Djokovic was understandably pretty tired going into this tie and given the vast ranking differences between the Serbian and Swedish players, team captain Bogdan Obradovic took the decision to replace him with Janko Tipsarevic for the first day's singles matches.
It was still not much of a gamble as both Swedish players were making their Davis Cup debuts and as expected, Serbia ended day 1 2-0 up.
The experienced doubles pairing of Simon Aspelin and Robert Lindstedt (Lindstedt is ranked 14 in the world) are Sweden's best chance of avoiding a total whitewash and so Djokovic has been brought in to try and close the tie out.
The Serb's are still big favourites as Zimonjic is ranked six in the world and won last season's end of year ATP World Finals. He has hardly slacked off in 2011, reaching the semi-finals of the French Open and Wimbledon.
Prediction: Djokovic and Zimonjic to progress in 4
