MILAN — Serie A leader Juventus bounced back from a loss to Roma with a convincing 3-0 win over visiting Siena Sunday. Switzerland midfielder Stephan Lichtsteiner gave Juve the lead in the 30th minute after Siena goalkeeper Gianluca Pegolo redirected a pass from Mirko Vucinic directly into Lichtsteiner's path. Sebastian Giovinco doubled Juve's lead in the 74th from a sharp angle, with Pegolo again responsible, deflecting the shot off the bar and in. France midfielder Paul Pogba added another for Juve in the 89th with a shot from beyond the area, his fifth this season after joining from Manchester United. Siena's best chance came in the 76th when Innocent Emeghara, the Switzerland forward who has scored four goals since coming over on loan from French club Lorient last month, threatened with an impressive header that Juve goalkeeper Gianluigi Buffon did well to tip off the bar. Juventus moved provisionally seven points ahead of second-place Napoli, which visits Udinese Monday. Elsewhere, Roma won 3-2 at Atalanta under the snow, which at times made the pitch in Bergamo completely white. On loan from Inter Milan, 19-year-old Croatian forward Marko Livaja scored twice for Atalanta but Roma responded with goals from Marquinho, Miralem Pjanic and Vasileios Torosidis — the Greece defender who scored the winner in the 71st with a header from a sharp angle for his first goal since transferring from Olympiakos last month. Roma is eighth, 18 points behind the leader.Catania stayed two points ahead of Roma with a 2-1 win at Parma, getting goals from Francesco Lodi and Spanish forward Keko. Also, Cagliari edged Torino 4-3 in a match behind closed doors at Cagliari's Is Arenas stadium, which has safety issues. Cagliari captain Daniele Conti scored the winner in the fifth minute of added time with a long shot that deflected in off a defender, two minutes after Rolando Bianchi had equalized for Torino with a penalty. Earlier in the lunchtime fixture, Sampdoria moved safely into the middle of the table with a 2-0 win over Chievo Verona, extending its unbeaten streak to five matches. — Agencies