( CNN ) -- Bayern Munich 's hopes of retaining the German Bundesliga title suffered another blow on Saturday as Louis van Gaal 's team were held 1-1 at third-placed Bayer Leverkusen . The Bavarians now trail leaders Borussia Dortmund by 14 points after 13 rounds , having missed out on the chance to move into the top-five after conceding an equalizer right on halftime . Germany striker Mario Gomez continued his hot scoring run to put Bayern ahead in the 34th minute from close range after Bastian Schweinsteiger flicked on Thomas Muller 's cross . But Danijel Pranjic brought down Sidney Sam , allowing Arturo Vidal to slot in the resulting spot-kick . Van Gaal brought on France midfielder Franck Ribery in the 61st minute , but the closest Bayern came to a winner was when Gomez headed Philipp Lahm 's injury-time cross over the bar . `` It was bitter to draw , because I could have scored in the last few minutes , '' Gomez , who has netted eight goals this season and five in the last four games , told AFP . `` Leverkusen were very strong in the second half , so we have to be happy with the point . '' Borussia Dortmund came from behind to win 2-1 at Freiburg and maintain the club 's seven-point margin at the top . Freiburg took the lead in the 26th minute with a farcical own-goal as Neven Subotic 's attempted clearance hit fellow defender Mats Hummels and bounced into the net after Dortmund keeper Roman Weidenfeller failed to hold onto a free-kick . The visitors leveled with 15 minutes to play though substitute Robert Lewandowski , whose header from Marcel Schmelzer 's cross came within seconds of coming on and followed up his midweek double for Poland . Three minutes later Lewandowski 's compatriot Lukasz Piszczek delivered a low cross which Mensur Mujdza turned into his own net , and Freiburg were denied a late equalizer when Julian Schuster hit the bar . Early-season pacesetters Mainz stayed second , two points ahead of Leverkusen , winning 3-2 at Borussia Monchengladbach after twice coming from behind . Marco Reus scored the opener in the 53rd minute and the 21-year-old put Gladbach back ahead on 69 after 20-year-old Andre Schurrle leveled . Substitute Sami Allagui won it for Mainz , equalizing soon after coming on in the 75th minute with a volley from Christian Fuchs ' cross . Then , with two minutes left , the Tunisian striker ran onto a fine through-ball from Fuchs , lifted the ball over goalkeeper Christofer Heimeroth and headed the ball into the net . The result means Gladbach could drop to the bottom of the table if Cologne win at Stuttgart on Sunday . Hannover moved up to fourth place on 22 points with a 3-2 win at home to Hamburg , as striker Mike Hanke headed a late winner . Hannover led in the 31st minute through Lars Stindl , but Chinese midfielder Heung-Min Son leveled from close range five minutes before halftime and then headed Hamburg ahead nine minutes after the interval . Christian Schulz equalized five minutes later with a superb individual effort as the Hannover captain flicked the ball up and beat goalkeeper Jaroslav Drobny with an overhead kick . Son then hit the post before Hanke popped up in the final minute to leave Hamburg in ninth place after a fifth defeat in 13 games . Hoffenheim moved above Freiburg on goal difference , claiming fifth place on 21 points with a 4-0 rout of Eintracht Frankfurt . Boris Vukcevic headed the opener in the 31st minute from Sebastian Rudy 's corner , then seconds later Vedad Ibisevic had an effort cleared off the line . But the Bosnia striker killed off the game with goals in the 69th and 70th minutes , the first from Andreas Beck 's cross and the second after a surging run by Peniel Mlapa . The Togo-born teenager wrapped it up in time added on as Frankfurt dropped to seventh after the home side 's seven-match unbeaten run came to a crashing halt , leaving the club on 20 points and above Bayern on goal difference . Promoted Kaiserslautern moved away from the relegation zone with a 3-1 win at Nuremberg , who remained on 18 points behind Hamburg on goal difference . The visitors led 3-0 after 33 minutes with goals from midfielder Stiven Rivic -- his first for the club -- and fellow Croatian Ivo Ilicevic before their compatriot Srdjan Lakic headed his seventh of the season . Substitute Robert Mak pulled one back in the 67th minute before Lautern 's Athanasios Petsos was sent off for an elbow on Andreas Wolf with 11 minutes left . Nuremberg captain Wolf hit the bar with a penalty for minutes later as his team 's four-match winning run at home came to an end . Schalke climbed out of the bottom three and up to 14th on 13 points with a morale-boosting 4-0 thrashing of Werder Bremen as the teams warmed up for midweek Champions League action in starkly contrasting fortunes . Veteran Spanish striker Raul netted a hat-trick after Christoph Metzelder opened the scoring in the 23rd minute with a header that hit the bar and then rebounded into the net off the back of helpless goalkeeper Tim Wiese . Raul doubled the lead on the stroke of halftime after Wiese could only parry Edu 's free-kick and then pounced on Per Mertesacker 's clearance 11 minutes after the break . The 33-year-old then chipped Wiese after a defensive lapse by substitute Daniel Jensen before Bremen had Philipp Bargfrede sent off for two late bookings . The visitors slumped to a third defeat in four games , and will fall to 12th if Wolfsburg earn a point at St. Pauli on Sunday .
Champions Bayern Munich trail German leaders Borussia Dortmund by 14 points . Bayern in eighth place after drawing 1-1 at third-placed Bayer Leverkusen . Dortmund stay seven points clear of second-placed Mainz after beating Freiburg 2-1 . Schalke move out of bottom three with 4-0 thrashing of Werder Bremen .