Four-time champion Roger Federer is out of the Australian Open after being beaten in the third round by unheralded Italian Andreas Seppi. The 33-year-old Swiss second seed went down 6-4, 7-6, 4-6, 7-6 to Seppi, who is ranked 46 in the world. Indian tennis players Leander Paes, Rohan Bopanna and Sania Mirza have lost their respective doubles matches in the second round of the Australian Open leaving the country's challenge restricted to the mixed doubles competition.Sania and her Chinese Taipei partner Su-Wei Hsieh were stunned by the unseeded Canadian-Polish pair of Gabriela Dabrowski and Alicja Rosolska 6-7, 4-6. Sania though restored some pride in the mixed doubles event, when she combined with Bruno Soares of Brazil, and the top-seeded pair dispatched Timea Babos and Eric Butorac in double quick time 6-1, 4-6, 10-3. Bopanna and Daniel Nestor were outplayed in their second-round men's doubles match by Feliciano Lopez and Max Mirnyi 5-7, 3-6. Paes, alongwith South African partner Raven Klaasen, went down to Simone Bolelli and Fabio Fognini 6-2,4-6, 1-6. Mahesh Bhupathi, alongwith Jurgen Melzer, had already crashed out after the Indo-Austrian pair lost to Diego Schwartzman and Horacio Zeballos 4-6, 3-6 yesterday. In the mixed doubles draw, Bhupathi has paired up with Jarmila Gajdosova of Australia, Bopanna combines with Czech Republic partner B Zahlavova Strycova and Paes is set to partner Martina Hingis.