Ostrava, Czech Republic (Sports Network) - Kazakhstan swept Sunday's reverse singles rubbers to stun the host Czech Republic with a 3-2 victory in their best-of-five first-round Davis Cup matchup.
The Czechs headed into Day 3 with a 2-1 advantage, but the underdog Kazakhstanians got clutch wins from Andrey Golubev and Mikhail Kukushkin to eliminate their round-of-16 opponent.
Golubev leveled the tie at 1-1 by stunning world No. 7 and 2010 Wimbledon runner-up Tomas Berdych 7-5, 5-7, 6-4, 6-2 in 3 1/2 hours, and the 63rd-ranked Kukushkin followed by dousing Jan Hajek 6-4, 6-7 (4-7), 7-6 (10-8), 6-0 in 3 hours, 27 minutes in the weekend finale on the indoor hardcourts at CEZ Arena. A disappointing Hajek went 0-2 this week.
Berdych and Lukas Dlouhy gave the Czech Republic a 2-1 edge here on Saturday when they bested a Kazakhstanian duo of Evgeny Korolev and Yuri Schukin 6-4, 6-4, 7-6 (7-4) in the doubles.
On Friday in Ostrava, Golubev outlasted Hajek in five sets and Berdych cruised past Kukushkin in straights for a 1-1 deadlock.
Kazakhstan made its World Group debut this week, while the Czechs were vying for a fourth straight trip into the quarterfinals. The Czech Republic reached the Davis Cup final two years ago and the semifinals last year.
Up next for Kazakhstan will be Argentina in the quarters in July.