A relieved Potter followed the added time of almost eight minutes and was able to walk onto the pitch smiling and applaud his players after the quarter-final was completed.
The coach applauded and then roared with the fans.
Ben Chilwell shot Marius Wolf's arm.
After VAR review, the referee awarded a penalty to Chelsea.
Kai Havertz shot the ball into the right post while Alexander Meyer was at the left.
After a new VAR review, the referee awarded a new penalty to Chelsea.
This time, Havertz shot into the goal after placing the ball two centimeters to the right side of the same post.
Remarkably, it was Chelsea players who first rushed into the penalty area in connection with the first penalty.
It was the first time this year, a run of twelve games, that Chelsea scored more than one goal in a game.