World No. 1 Novak Djokovic says he is 100 percent recovered from his shoulder injury and should be fine for the ATP Finals.
"I had problems in the shoulder and before that with my abdominals," he told reporters. "But everything is better. I served a maximum of my ability for two or three days."
Since winning the U.S. Open, Djokovic was forced to retire in the Davis Cup semifinals, withdrew from Shanghai, was hobbled in his loss to Kei Nishikori in Basel, and withdrew from his quarterfinal of Paris-Bercy.
He'll face Tomas Berdych in his first match in London. "The season is long," he said. "The calendar is loaded and the players are struggling to be 100 percentĀ of all tournaments, especially late in the season."