Jurgen Klopp is famous for his dramatic displays of emotion on the touchline, but he says Atletico Madrid coach Diego Simeone is three times as intense.
The pair will go head-to-head on Wednesday as their sides meet in the Spanish capital in the first leg of their Champions League last-16 tie.
Both managers' theatrics and passionate celebrations on the sidelines have won them many admirers but has also landed them in trouble with football's governing bodies over the years.
Editors' Picks
But Klopp says he is nowhere near as wild as the Argentine, for whom he has great admiration.