BERLIN: Leipzig鈥檚 shock quarter-final win over Atletico Madrid sees the German club facing Paris Saint Germain in the Champions League semifinals next Tuesday barely a decade since their creation.

Under Julian Nagelsmann, 33, a rising star among German coaches, Leipzig are also challenging Bayern Munich鈥檚 domination of the Bundesliga.

Leipzig were founded in 2009 when Red Bull took over the license of fifth-tier side SSV Markranstaedt, near Leipzig, renaming and rebranding the club.

The city of Leipzig was chosen under advice from Germany legend Franz Beckenbauer, a friend of Red Bull owner Dietrich Mateschitz.

The team shot up Germany鈥檚 league pyramid with four promotions in seven seasons.

As recently as 2013-14, they were still in the third division.

They reached the Bundesliga in 2016-17, making a flying start by briefly keeping Bayern Munich from first place in the league table before finishing second.

However, their Bundesliga arrival was met with hostility by Germany鈥檚 established clubs, unhappy about their commercialism.

As the German Football League (DFL) insist a sponsor cannot appear in a club鈥檚 title, the fabricated German word RasenBallsport 鈥� literally 鈥淟awnBallsport鈥� 鈥� make up the initials RB.

Under the league鈥檚 鈥�50+1鈥� rule, clubs must hold a majority of their own voting rights, but all Leipzig members are Red Bull employees.

鈥淭here鈥檚 football being played to perform for a soda can,鈥� grumbled Borussia Dortmund CEO Hans-Joachim Watzke in 2016.

Leipzig had the last laugh by beating Dortmund 1-0 in only their second Bundesliga match.

鈥�11 cans beat an 11 who bottled it,鈥� retorted Leipzig鈥檚 then-boss Ralf Rangnick.

However, some German fans were as unimpressed as Watzke.

A severed bulls head appeared pitch side when Leipzig opened their 2016-17 season with a narrow German Cup win over neighbors Dynamo Dresden.

Protests by home fans followed when Leipzig played away, particularly at Cologne, Moenchengladbach and Dortmund.

Flags bearing insulting or threatening slogans aimed at Red Bull boss Mateschitz often appeared when the club visited.

Things got out of hand in February 2017 when a large group of Dortmund supporters attacked visiting RB fans, including women and children, resulting in 10 injuries.

Dortmund鈥檚 then-captain Marcel Schmelzer scolded their fans, 鈥渨e don鈥檛 know you like that,鈥� in a video message and a stand was closed for the next home game.

Leipzig have always resisted the urge to use Red Bull鈥檚 huge finances to buy established stars.

Cristiano Ronaldo and Lionel Messi were both considered 鈥渢oo old, too expensive鈥� by Rangnick back in 2016.

The policy remains of developing young talent.

After becoming one of the Bundesliga鈥檚 best central midfielders, Naby Keita was 23 when Liverpool signed him in 2018 for around 鈧�60 million ($70 million).

Timo Werner, 24, joined Chelsea in June after scoring 34 goals for Leipzig last season.

Captain Yussuf Poulsen, a veteran at 26, was signed in 2013-14 when Leipzig were in the third division.

In Nagelsmann, signed last season from Hoffenheim, Leipzig secured arguably Germany鈥檚 brightest coaching talent, nicknamed 鈥淢ini Mourinho.鈥�

In the current squad, ex-Barcelona academy product Dani Olmo, 22, and US midfielder Tyler Adams, are both fulfilling promise after scoring on Thursday against Atletico.

RB Leipzig have made no secret of their desire to challenge the established order in German football by rivalling Bayern or Dortmund and finished third in 2019/20 to qualify for next season鈥檚 Champions League.

In each of their four seasons in Germany鈥檚 top flight, Leipzig qualified for Europe by finishing in the top six.