Goals by Ryan Gravenberch and Diogo Jota earned Liverpool a 2-0 home victory over Belgian side Union Saint Gilloise on Thursday, giving them control of Europa League Group E with maximum points.
The hosts claimed a deserved lead a minute before half time as Gravenberch calmly tapped in a rebound from close range after Union goalkeeper Anthony Moris had made an initial save.
Jota secured the win two minutes into stoppage time when he took advantage of a counter-attack and calmly rolled the ball past Moris from inside the box.
Liverpool top the group with six points and Union are third with one.
"I think it's really obvious how good Gravenberch is, what a talent he is," Klopp told reporters on Thursday. "He's enjoying the situation, enjoying himself, that's very important, (he) gets step by step all the confidence back, that's really cool to see.
Toulouse are second in Group E with four points after a first-half goal by Gabriel Suazo gave them a 1-0 win against LASK.
Bayer Leverkusen secured a 2-1 victory at Norwegian champions Molde thanks to two goals in four minutes.
They top Group H with six points, alongside Azerbaijani side Qarabag who clinched a 1-0 victory at Hacken.
AS Roma swept aside Swiss side Servette, Romelu Lukaku, Andrea Belotti and Lorenzo Pellegrini netting in a 4-0 home victory.