Reuters

Paris, Feb 11: Roger Federer should concentrate on his own career rather than criticising others, Serb Jelena Jankovic said on Tuesday after being irked by the Swiss master's unflattering verdict on her No. 1 world ranking last year.

Last month, former world No. 1 Federer hit out at the way the WTA rankings were calculated, saying a player who has never won a Grand Slam should not be granted the No. 1 spot.

Jankovic reached the top spot in the WTA rankings in August having never won a major. She lost her first Grand Slam final to Serena Williams at last year's US Open.

The Serb has since dropped down to third in the world following a shock fourth-round defeat to France's Marion Bartoli at the Australian Open.

"To be honest, I do not like to talk about players, I really prefer to focus on myself," Jankovic said in an interview at the Paris Open. She said she could not understand why Federer felt the need to hit out at women's tennis while his great rival Rafa Nadal, who took over from the Swiss as world number one, was so "humble".

"Why should he even care? I don't like putting my nose in other's business. I mean, one thing I like about Nadal is that he is such a great champion, he is so humble, always has kind words for everybody, he is a role model for everybody," said Jankovic.

Federer also led the charge against Jankovic's compatriot Novak Djokovic when he quit because of the heat in his Australian Open quarter-final match.