Bayern Munich moved three points clear at the top of the Bundesliga with a 2-1 win over Stuttgart on Sunday, as Borussia Dortmund drew.
Visitors Bayern trailed to Christian Gentner's goal five minutes into their match at the Gottlieb-Daimler-Stadion.
Former Stuttgart man Mario Gomez scored against his former club to level for Bayern eight minutes later.
Things went from bad to worse for the home side when they had Christian Molinaro sent off in the 28th minute.
And Gomez completed the misery for his old colleagues, bagging his and Bayern's second to make it 2-1 on 57 minutes.
It was Bayern's third win in their last three visits to Stuttgart, and the sixth goal netted by the returning Gomez.
The Germany international continues to haunt his former club following a 35-million-euro transfer to the Allianz Arena in May 2009.
Bayern's comeback victory enabled them to take full of advantage of the latest slip up by Borussia Dortmund.
The defending champions were held 1-1 at home by Kaiserslautern, the second draw in succession for Juergen Klopp's team.
Dortmund had led thanks to Shinji Kagawa's goal on 27 minutes, with Olcay Sahan levelling for the visitors just before the hour mark.
Kaiserslautern continue to cement their reputation as the Bundesliga's draw specialists - they have now shared the points in four of their last six league matches.
But they are without a win in that time, and sit 15th on the table, clear of the relegation zone on goal difference only.