He gave an imperious display in the 2-1 victory, winning the most aerial duels of any player on the pitch, and Klopp was absolutely thrilled with his impact.
‘He’s a brilliant guy, smart guy, intelligent, everything,’ Klopp told Match of the Day after the game.
‘He’s not easy on the eye, he’s not Messi but who cares? In the air, he’s a monster! He was incredible.
‘For the first game, I think everyone can imagine how nervy that must be after a long wait.
‘Twelve Championship teams wanted him and to me it was clear he was going, and I was fine with that – and it didn’t work out for whatever reason, and it’s great!
‘Tonight he was spot on, helped the team incredibly.’
Klopp added to Sky Sports: ‘The way we defended… Nat Phillips, wow! I couldn’t be more happy.
‘Before the game I asked him if he was nervous, he said no, I said I would be. But it’s good because it keeps you awake and he was awake from the first second. Confident, did his stuff and played a really good game.’