MALAGA, Spain, Nov 25 (Reuters) - Italy returned to the Davis Cup final after a gap of 25 years as Jannik Sinner beat Novak Djokovic in both singles and doubles to secure a 2-1 victory over Serbia on Saturday that earned the 1976 champions a title clash with Australia. "It was for sure the game-changer today," Sinner said of his singles heroics at 4-5. "Obviously playing doubles in the decider of a Davis Cup tie is not easy. We are a very complete team and each one of us is really happy to be here. Reporting by Shrivathsa Sridhar in Bengaluru; Editing by Pritha Sarkar, Clare Fallon and Toby DavisOur Standards: The Thomson Reuters Trust Principles.

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Persons: Novak Djokovic, Lorenzo Sonego, Djokovic, Miomir, Martin, Filippo Volandri's, Lleyton Hewitt's, Kecmanovic, Lorenzo Musetti, Argentina's Juan Martin del Potro, Sinner, Daniil Medvedev, Musetti, Shrivathsa Sridhar, Pritha Sarkar, Clare Fallon, Toby Davis Organizations: Davis, Serbia, Martin Carpena Arena, Australia, Serbian, ATP, Djokovic, men's, Thomson Locations: MALAGA, Spain, Italy, Serbian, Finland, Netherlands, Bengaluru