Top-seeded Nikolay Davydenko downed Lukas Dlouhy of the Czech Republic 6-2, 6-1 in the St. Petersburg Open first round on Wednesday for his 50th match win of the season.
Davydenko was in seventh place in the race for a berth in the eight-man, season-ending Masters Cup in Shanghai, and a good effort in the hometown event would help him qualify for the first time.
In a second-round match, fifth-seeded Nicolas Kiefer beat Jurgen Melzer of Austria 3-6, 6-3, 7-5 for the German's fifth successive win over Melzer.
Greg Rusedski, seeded seventh, defeated Dmitry Tursunov of Russia 6-4, 6-4 in his tournament opener, and Kenneth Carlsen of Denmark and Robin Vik of the Czech Republic joined Kiefer in the quarterfinals, AP reports.
Officials with the Indian Air Force believe that Russia's fifth-generation Su-57 fighter jet does not correspond to required characteristics and is inferior to the American F-35 and F-22
A nuclear-powered submarine of the British Navy surfaced in the ice of the Arctic for the first time in many years