Sweden's Eleskovic retires in Davis Cup

Sweden's Ervin Eleskovic retired with a knee injury in the second set against Serbia's Janko Tipsarevic to hand the defending champion a 2-0 lead in their Davis Cup quarter-final on Friday.

Tipsarevic, who replaced top-ranked Novak Djokovic on the Serbian team, won the first set 6-2 and was up 1-0 when the Swede fell awkwardly while trying to return a second serve on the indoor hardcourt in Halmstad.

Djokovic withdrew from the singles match citing problems with his left knee.

In the first match, Serbia's Viktor Troicki overcame a late challenge by Michael Ryderstedt to win 6-3, 6-1, 6-7 (6), 7-5.