This season, Dortmund have emerged as the darlings of European football. Their focus on youth development, insistence upon keeping a modest wage scale and balancing their budget is a breath of fresh air for many fans who have become weary by the debt-ridden, player-poaching ways of many of Europe's other top teams. And their high-energy, intense pressing and counterattacking system makes the two-time Bundesliga titleholders one of Europe's most exciting sides.
Much can be said for the dazzling skill of Mario Gotze and Marco Reus, but behind all the team's many talents is a tactical genius in Jurgen Klopp. The trainer transformed an ordinary winger in Lukasz Piszczek into an extraordinary right-back, and converted Ilkay Gundogan from an underachieving playmaker to a top-class holding midfielder.
At the same time, Klopp has helped redefine the roles of striker, centre-back and playmaker in his team. And if there's any doubting Klopp's credentials, just ask Nuri Sahin and Shinji Kagawa, neither of whom were ever quite the same after leaving the Stuttgart native's tutelage.
Klopp's system is unique and based on some fundamentals, but in many ways is quite complex. For a full, position-by-position analysis of the trainer's tactics, click "Begin Slideshow."