Jo Wilfried Tsonga's unbeaten run in the Davis Cup ended Sunday when the Frenchman was forced to retire with a sprained ankle against Simon Greul of Germany.
France had already qualified for the quarterfinals after Michael Llodra and Julien Benneteau defeated Philipp Kohlschreiber and Christopher Kas on Saturday for an insurmountable 3-0 lead.
Tsonga retired while trailing 4-6, 6-2, 1-0. The former Australian Open runner-up is expected to play the BNP Paribas Open starting next week at Indian Wells, California.
``I preferred to stop because it hurt me when I walked,'' Tsonga said. ``It should take a few days before returning to normal. I will undergo scans tomorrow morning.''
Julien Benneteau, who was named as a replacement for Gael Monfils, then gave his country a 4-1 victory with a 6-2, 7-5 win over Benjamin Becker in the last meaningless singles match. Benneteau won 83 percent of the points played on his first serve and broke his opponent four times.
On Friday, Gael Monfils and Tsonga won the opening singles against Kohlschreiber and Benjamin Becker respectively.
France will play Spain at home in the quarterfinals July 9-11. France's last victory over Spain dates back to 1923.
``We won't be favorites,'' Tsonga said. ``They are the best and it's a good moment to write history.''
