Career free fall 'hard to accept': Djokovic

World number two has been on downward spiral since last year’s French Open triumph

PARIS: Novak Djokovic put Serbia on course for the Davis Cup semi-finals before admitting that seeing his career plunge into free fall since his history-making French Open triumph had been "hard to accept".

The world number two shrugged off his recent elbow injury — and his mediocre record of just seven wins in 2017 — to give 2010 Davis Cup champions Serbia a winning start in their quarter-final against Spain in Belgrade with a 6-3, 6-4, 6-2 victory over 24th-ranked Albert Ramos Vinolas.

Viktor Troicki, the world 39, then made it 2-0 by seeing off 19th-ranked Pablo Carreno Busta 6-3, 6-4, 6-3.

Victory for Djokovic was a major confidence boost for the former world number one who has lost his Wimbledon, US and Australian Open titles in the last year and surrendered the top ranking spot to Andy Murray.

"I have lost my best game in the last few months," Djokovic, whose French Open win in June last year allowed him to complete the career Grand Slam, told reporters after securing a 12th successive Davis Cup singles win. "It was hard for me to accept after being on top for the last six years but today's match shows that I can get back to winning ways. I am very happy with my performance today which is very encouraging because I now know I am on the right path to discovering my best form."

Five-time Davis Cup winners Spain are without Nadal in Belgrade after the 14-time Grand Slam champion opted to stay at home to prepare for the clay-court season.

Team captain Nenad Zimonjic and Troicki will face Marc Lopez and Jaume Munar in Saturday's doubles where a win will give Serbia a semi-final date against either France or Britain.

On a perfect day for all four of the quarter-final hosts, Australia were 2-0 up on the United States in Brisbane, closing in on a semi-final date against Belgium who were 2-0 ahead of Italy in Charleroi.

In Rouen, Lucas Pouille and Jeremy Chardy moved nine-time champions France to the verge of a fifth semi-final in eight years with straight sets wins against a British team missing Andy Murray who sat out the tie with an elbow injury.

Pouille claimed a 7-5, 7-6 (8/6), 6-3 victory over Kyle Edmund before Chardy eased past Dan Evans, playing on clay for the first time in three years, 6-2, 6-3, 6-3.

Chardy, only France's ninth best singles player, was competing in his first Davis Cup singles rubber in six years.