( CNN ) -- Radek Stepanek drew on his vast experience to give a tennis lesson to Serbia 's Dusan Lajovic in the deciding singles as the Czech Republic retained the Davis Cup Sunday . The 34-year-old Stepanek kept his composure in front of a partisan crowd in the Belgrade Arena to win 6-3 6-1 6-1 in one hour 52 minutes of largely one sided action.. Lajovic , a lowly 117 in the world , could not capitalize on the momentum built by Novak Djokovic , who beat Tomas Berdych in straight sets to level the tie at 2-2 ahead of the decider.. World No.2 Djokovic , fresh from his triumph at the ATP World Tour Finals , was winning his 24th straight match since the U.S. Open , but it was all to no avail . Stepanek , who had paired with Berdych to win the crucial doubles for the reigning champions Saturday , was stunned in the very first game as he saw Lajovic break his service . But he hit back with two breaks of his own to take control and with it the first set . Three breaks of service in the second set saw him take a stranglehold on the match and the third set followed a similar pattern . Serving for the coveted team title , he made no mistake and completed victory with a decisive smash . By then many of the home crowd had departed , leaving a band of Czech supporters to celebrate their repeat success wildly . 2010 champions Serbia went into the final deprived of Janko Tipsarevic , who is injured and Viktor Troicki , serving a controversial doping ban . Djokovic sat out the doubles and despite beating Berdych 6-4 7-6 6-2 with another impressive display on indoor courts it was always likely that Lajovic 's inexperience would be exploited by the canny Stepanek . `` I do n't think words can describe it . It is completely different from the first time . To defend this trophy means the world , '' Stepanek told the official Davis Cup website.. `` Playing in Serbia on their surface in front of their fans ... we made history today . '' Czech captain Vladimir Safarik paid tribute to Stepanek , who was also the hero last year as he beat Spain 's Nicolas Almagro in the deciding singles of the final . `` Radek is a real professional . In the final of the fifth rubber , to win 63 61 61 is something amazing . '' .
Serbia win Davis Cup final beating the Belgrade Arena . Czech retain the trophy they won Saturday . Radek Stepanek wins the deciding singles . Novak Djokovic had extended winning run to 6 to draw Serbia level .