# Tennis: Novak Djokovic led Serbia into the quarter-finals of the United Cup today despite struggling with a sore right wrist which required on-court treatment. The world number one dropped a set in grinding past the Czech Republic’s Jiri Lehecka 6-1, 6-7, 6-1 and required several visits from the trainer. He did not take part in the deciding mixed doubles. It put Serbia into a last-eight clash with Australia tomorrow.
Tennis: Djokovic struggles with sore right wrist