OSTRAVA, Czech Republic -- Defending champion Czech Republic reached the quarterfinals of the Davis Cup on Sunday after Tomas Berdych won the first reverse singles to clinch the first-round tie.
Berdych, an Australian Open semifinalist, dispatched Thiemo de Bakker 6-1, 6-4, 6-3 on an indoor hard court at CEZ Arena to give the Czechs an unbeatable 3-1 lead. In the final meaningless match, Igor Sijsling defeated Lukas Rosol 6-3, 6-3 to reduce the Czech overall victory to 3-2 in the best-of-five series.
Berdych was never threatened and converted his first match point with a forehand winner.
Seeking their third straight Davis Cup title, the Czechs won the 10th consecutive Davis Cup series. They will travel for the April 4-6 quarterfinal to Japan, which beat Canada 4-1 in another first-round tie.
Italy ousts Argentina to reach quarters
Fognini defeated Berlocq 6-7 (5), 6-4, 6-1, 6-4 in 3 hours, 38 minutes.
It's Italy's first victory over Argentina in Davis Cup play, and the loss ended Argentina's 12-year streak of reaching the quarterfinals.
Italy will face Great Britain, which advanced past the United States on Sunday, in the quarterfinals.
Japan beats Canada
With Nishikori leading 6-2, 1-0, Dancevic withdrew with a stomach injury giving Japan an insurmountable 3-1 lead. Japan advances to the quarterfinal round for the first time.
It was the latest in a series of injuries for the Canadians. Milos Raonic pulled out with a left-foot injury on Thursday while Vasek Pospisil, who was originally slated to play doubles on Saturday, was unable to recover in time from an injury.
Nishikori, who is No. 18 in the world rankings, won both his singles matches and also played in Japan's doubles win on Saturday.
Japan improved to 6-0 against Canada in Davis Cup play. The two countries last met in 1938.
France blanks Australia
Monfils dropped serve twice but broke Kyrgios three times, after Julien Benneteau cruised past Thanasi Kokkinakis 6-4, 6-1 in Sunday's first reverse singles match.
Benneteau broke Kokkinakis four times and did not face a single break point, hitting 30 winners to 14 for his opponent.
France secured a spot in the quarterfinals of the competition when Jo-Wilfried Tsonga and Richard Gasquet defeated Lleyton Hewitt and Chris Guccione 5-7, 7-6 (4), 6-2, 7-5 in Saturday's doubles to hand the hosts an unassailable 3-0 lead.
On Friday, Tsonga eased past Hewitt 6-3, 6-2, 7-6 (2), and Gasquet routed Kyrgios 7-6 (3), 6-2, 6-2.
France will face Germany in the quarterfinals while Australia will compete in the playoffs to stay in the World Group.
Despite the defeat, Australia still holds a 10-5 record against France in the competition.
Germany completes 4-1 victory
German captain Carsten Arriens was whistled and heckled by the home crowd when he announced there would only be one match. Germany, which last won the trophy in 1993, plays France in the quarterfinals in April, while five-time champion Spain faces a World Group playoff in September.
Serbia cushions loss to Switzerland
Lajovic beat Michael Lammer 6-3, 3-6, 6-4 to win Serbia's first point of the match. The 102nd-ranked Lajovic is Serbia's top player in the absence of Novak Djokovic, Janko Tipsarevic and Viktor Troicki.
Filip Krajinovic beat Marco Chiudinelli 6-4, 6-4.
Switzerland will face Kazakhstan in the quarterfinals in April.
The Associated Press contributed to this report.