The Reds defender reaffirmed his commitment to the club, just 18 months on from his previous renewal, by putting pen to paper at Anfield on Saturday morning.
The development is the latest milestone in a fledgling career that has already included 67 Liverpool appearances, a Champions League final, participation in a World Cup, full England honours and a goal for his country.
Alexander-Arnold signed this extended deal as a more mature person and player, according to Klopp – and one who rightly commands the respect and admiration of his coaches, teammates and fans.