LEIPZIG, who were only founded in 2009, reached the Champions League semi-finals for the first time on Thursday with a 2-1 win over Atletico Madrid.
The dramatic late win marks the first time the Bundesliga club has reached the last four of the competition and sets up a clash with Paris Saint-Germain on Tuesday for a spot in the final.
Leipzig struck first five minutes after the break when Dani Olmo finished off a nearly 20-pass move with a cushioned header past a helpless Jan Oblak after finding a pocket of space between four Atletico defenders just outside the six-yard box.
Joao Felix changed the complexion of the game upon his arrival from the bench in the 58th minute, teasing Leipzig defenders with delightful dribbling and proving a dangerous threat down the left side. And he was rewarded for his work 13 minutes later when he won and scored a penalty after bursting onto a fine layoff and suffering a Lukas Klostermann foul in the box — the former Benfica man then calmly beating Peter Gulacsi from the spot to even the score at 1-1.
Leipzig were not deterred and struck back through substitute Adams a minute before time when the American midfielder ran onto a pass at the top of the box and fired a low shot that took a heavy deflection and Oblak stranded as the ball bounced into the goal.
The goal made Adams the first U.S. International to score in the UEFA Champions League Quarterfinals or later.