Runaway Bundesliga leader Bayern Munich lost 2-1 at Leipzig on Sunday in a rare stumble ahead of the international break.

Sandro Wagner headed the visitors into an early lead but Naby Keita equalized before the break and Timo Werner claimed the winner 10 minutes after it.

It was Bayern's third defeat in 27 league games and Leipzig's first-ever win over the Bavarian powerhouse after three losses in the Bundesliga and a defeat on penalties in the German Cup last October.

Bayern leads Schalke by 17 points with seven games remaining. It can wrap up its record-extending sixth consecutive title with a win at home over third-place Borussia Dortmund on March 31 — if Schalke drops points to Freiburg on the same day.

Schalke and Dortmund had already postponed the celebrations by winning their 27th-round games, but Wagner got Bayern fans cheering when he scored in the 12th minute.

Wagner, selected to give Robert Lewandowski a rest, was one of several Bayern players waiting to head James Rodriguez' brilliant cross inside the far post.

But Bayern failed to cope with Leipzig's pressing game and Keita deservedly equalized on a rebound after Werner's effort was blocked.

Keita then sent Werner through to score his first goal since Jan. 20 and end Leipzig's four-game winless run.

Bayern coach Jupp Heynckes, who had called up Bayern under-19 midfielder Meritan Shabani to the senior squad for the first time, sent Lewandowski on for the last 20 minutes but the Poland striker was unable to add to his league-leading tally.

Michy Batshuayi first-half strike enough for Dortmund to see off Hannover

Michy Batshuayi scored his sixth Bundesliga goal in seven games as Borussia Dortmundconsolidated a place in the top four courtesy of a 1-0 home win against Hannover on Matchday 27.

As if offended by Thursday's European exit to Salzburg, BVB began determined to prove a point. Batshuayi burst in behind after 36 seconds, but directed his shot onto the post – an augury of what was to come. Dortmund peppered Philipp Tschauner's goal with shots – Gonzalo Castro and the impressive Andre Schürrle both went close – before Batshuayi gave the dominant hosts a deserved lead, cleverly diverting Schürrle's front-post corner into the net. There was no let-up from BVB, either: Batshuayi spurned two chances from close range prior to the interval, while Pirmin Schwegler shot straight at compatriot Roman Bürki with Hannover's only real opening.

Dortmund's fire and brimstone in the first half was replaced by a more measured approach at the start of the second period. The introduction of Sokratis for Ömer Toprak gave BVB some more defensive ballast, with the hosts content to circulate the ball through midfield. Although chances were few and far between – Hannover's Felix Klaus had two speculative efforts – Peter Stöger's side rarely had to leave their comfort zone. Indeed, the margin of victory could have been greater, but substitute Maximilian Philipp rattled the post in the closing stages. It mattered little in the final reckoning - BVB held on comfortably and keep up the pace in the top-four race.

Cologne dare to dream after victory over Bayer Leverkusen

Cologne moved off the foot of the Bundesliga table for the first time since Matchday 2 on Sunday with a 2-0 victory over 10-man Bayer Leverkusen.

Cologne defied their lowly position in the standings with a first-half display that was full of energy and vigour, hounding their guests into mistakes and stifling Leverkusen's build-up play. Leonardo Bittencourt was a constant menace down the left wing and he created the hosts' opener, crossing for Yuya Osako to squeeze a shot under Bernd Leno. Matters took a turn for the worse for the visitors on 33 minutes when striker Lucas Alario was sent off, but the Billy Goats were unable to add to the scoreline before the break.

Leverkusen could have equalised within seconds of the restart following a slick attacking move, but Julian Brandt's powerful shot was well saved by Timo Horn. Indeed, Bayer were the better side for much of the second period, but were again at fault for the next setback when Charles Aranguiz's attempted header back to the goalkeeper was intercepted by Simon Zoller, who lobbed the ball over the onrushing Leno before lashing into the empty net to secure three much-needed points in their efforts to avoid relegation.