( CNN ) -- So much for Roma 's sizzling start to the season . Roma set a record by becoming the first Serie A team to win its opening 10 games of a season but after Sunday 's 3-0 loss to Juventus when it finished with nine men , it slipped well behind the Old Lady . Even though Roma had n't been beaten in the division until Sunday , a run of five draws in seven games allowed in-form Juventus to grab the lead and now Juve -- with an eight-point cushion -- is in pole position to make it three league titles in a row . For all its possession , Roma was always playing catch up , since Juventus struck early through free-scoring midfielder Arturo Vidal -- he beat Morgan de Sanctis from close range following Carlos Tevez 's good work in the 17th minute . Juventus all but put the game away in the 48th minute when defender Leonardo Bonucci connected with Andrea Pirlo 's teasing free kick at the back post . Roma was out of sorts and Daniele de Rossi received a straight red in the 75th minute for his two-footed tackle on Italian international teammate Giorgio Chiellini . Pirlo , back from a knee injury , took the ensuing free kick and seconds later Leandro Castan saw red for his hand ball on the line . Mirko Vucinic sent de Sanctis the wrong way from the penalty spot to end Roma 's miserable evening . Elsewhere in Italy , Fiorentina beat Livorno 1-0 but Giuseppe Rossi -- the league 's leading scorer -- limped off with a knee injury after a challenge from defender Leandro Rinaudo . It was the same knee that has troubled the Italian international in recent years and forced him to miss Euro 2012 . `` We are all worried , '' Fiorentina manager Vincenzo Montella told reporters . AC Milan plays Monday but manager Max Allegri confirmed Sunday that he would be leaving when his contract expires at the end of the season . Allegri led Milan to the Scudetto in his first season of 2010-11 but the Rossoneri has struggled since off-loading an array of world-class internationals two years ago . Milan currently sits 13th in Serie A , much closer to relegation than Juventus , and was paired with Spanish high-flyer Atletico Madrid in the next round of the Champions League . `` We still have objectives to reach and we have to do everything we can to get back up the table , '' Allegri told Milan 's website . `` We have the Italian Cup and the Champions League to play in and I have faith that we 'll do well . `` I want to finish my time here in the best way possible . '' Showdown set in Spain . Barcelona and Atletico Madrid will face off next week tied on points atop Spain 's La Liga after Barca thrashed Elche 4-0 . Alexis Sanchez netted a hat-trick for the home team , which was still without multiple world player of the year Lionel Messi -- although he has looked sharp in his return to training -- and did n't start Brazilian ace Neymar . Barcelona 's website said Sanchez was chosen ahead of Neymar because he was `` better prepared to play . '' `` Alexis was in better condition and we have to pick one of the two , '' Barcelona manager Gerardo Martino told the club website . Barcelona overtook Atletico on goal difference ahead of the showdown in Madrid . Atletico edged Malaga 1-0 on Saturday . `` Atletico Madrid can win it all , '' said Martino . `` They are built to do great things , it does n't matter who plays . ''
Juventus ends Roma 's unbeaten run in Serie A by winning 3-0 in Turin . Juventus takes an eight-point lead over Roma atop the Italian divison . Barcelona reclaims top position in Spain 's La Liga by easing past Elche 4-0 . Alexis Sanchez nets a hat-trick for Barcelona , which was still without Lionel Messi .