Dortmund players celebrate after Paco Alcacer opened the scoring in a friendly against Liverpool at Notre Dame Stadium.
The England international, who was involved in just four matchday squads last season as he recovered from multiple ligament damage, was the standout star for the European champions at Notre Dame Stadium.
His explosive runs from midfield were on show and he provided the impetus in attack for the Reds during the first outing of their US tour.
Oxlade-Chamberlain’s cross from the right, which Ryan Kent connected with nearly had Liverpool level after Paco Alcacer converted from close range following poor defending three minutes in, but Marwin Hitz pulled off a superb save.
Bruun Larsen then profited after Yasser Larouci, who had impressively kept Jadon Sancho quiet in the first 45, tried to dribble out of the box and lost the ball to Marius Wolf who pulled it back for the winger.
Following the match, Klopp had high praise for Larouci and the job he did on Sancho, as the 18-year-old marked the England international in the first half and provided the manager with further evidence that he could deputise for Andy Robertson at left-back.
Klopp said: “Yasser played against one of the biggest talents in world football and did really well. The pitch helped a little bit, but still he did really well.”
The Reds will face Sevilla at Fenway Park on Sunday, before closing off their U.S. commitments with a test against Sporting at Yankee Stadium next Wednesday.