Why Is Jurgen Klopp Using Brain Sensors To Win The Champions League Final?  The Champions League final is one of the most difficult matches to play and win, and that is why coaches do their best using different means to get their players fully prepared for it.  The physical training, the tactical drilling, the mind games…every weapon is brought out of the arsenal when it comes to the Champions League final. But this year, Jurgen Klopp has taken the mind games to a completely different level.