Five things we learned in the Bundesliga

Ryland JAMES
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Bayern Munich's striker Robert Lewandowski (R) and Bayern Munich's midfielder Arturo Vidal (L) celebrate after the third goal for Munich during the German First division Bundesliga football match Bayern Munich vs Eintracht Frankfurton March 11, 2017

Bayern enjoy a red-letter day as their rivals lost, Naby Keita's collapse worries Leipzig and Dortmund suffer a Champions League hangover.

Here are five things we learned from the Bundesliga this weekend:

Bayern on cloud nine

Bayern Munich capped a red-letter day with a 3-0 win against Eintracht Frankfurt which left them 10 points clear and on course to claim a fifth straight title.

Despite a mediocre performance, Bayern's plight was helped by nearest rivals RB Leipzig and Borussia Dortmund both lost.

"We won and the others missed out on taking points," said Germany forward Thomas Mueller. "We didn't play well enough, but yet we're floating on cloud nine."

It seems to be just a matter before Bayern end all mathematical doubt and win the league.

The Bavarian giants hold the record for the quickest confirmed league win when the won the 2013/14 title on March 25 2014 -- with seven games to spare.

Cancer-survivor Russ' league return

Despite his team's defeat, Frankfurt defender Marco Russ had something to celebrate in Munich as he came off the bench for the last 25 minutes for his first Bundesliga appearance since battling cancer last year.

A routine blood test revealed Russ had a malignant tumour.

The 31-year-old made his comeback for the final two minutes of Frankfurt's German Cup win over Bielefeld last month, but on Saturday made his first league apparence since May 19.

"It's good that he has tasted the Bundesliga air again. He has earned it," said Frankfurt's manager Bruno Huebner.

Dortmund's Champions League hangover

Despite Wednesday's 4-0 win over Benfica, Borussia Dortmund suffered another Champions League hangover by losing 2-1 at Hertha Berlin.

Dortmund's Pierre-Emerick Aubameyang cancelled out Salmon Kalou's early strike with his 22nd league goal of the season before Marvin Plattenhardt smashed home Hertha's second-half winner.

This was the third time Dortmund have lost following a European match this season.

They crashed 2-0 to Leverkusen last September after a 2-2 draw with Real Madrid, then went down 2-1 in Frankfurt last November after their record 8-4 romp against Legia Warsaw.

"Perhaps it's just coincidence, but the result is very annoying," coach Thomas Tuchel admitted in Berlin.

Keita's collapse

There were worrying scenes following RB Leipzig's 1-0 defeat to Wolfsburg when Guinea midfielder Naby Keita collapsed in the dressing room area.

Having played the 90 minutes, the 22-year-old Keita lost conciousness shortly after leaving the dressing room and was taken to hospital once his condition was stabilised.

The club say he is thought to have suffered a circulatory collapse brought on by exertion.

"His test results ​​were all okay, that is why we have to look at what was the cause," said Leipzig's coach Ralph Hasenhuettl.

Weiser's dramatic drop

Hertha's midfielder Mitchell Weiser took no end of ribbing on social media after theatrically dropping to the turf after a clash with Dortmund's Ousmane Dembele shortly before the final whistle.

Both players were booked for the incident -- which means Dembele is suspended for his next game for a fifth yellow card -- while Weiser was left clutching his left ankle.

Pundit and ex-referee Thorsten Kinhoefer accused Weiser of play-attacking and the ex-Bayern midfielder was the subject of several mocking tweets under the ironic hashtag #GetWellSoonMitch.

But Hertha posted a picture of Weiser's badly marked ankle and Hertha coach Pal Dardai defended his player.

"There's no two ways about it. He (Dembele) kicked his (Weiser's) standing leg and he's lucky he didn't land in hospital," said Dardai.