Coutinho put in a man-of-the-match display to help Liverpool to within one win of securing a Champions League place this afternoon, scoring two and creating another in a 4-0 win over West Ham United.
"It was hard work, and there were a few moments where the game could have changed, but we played really good and we were deserved winners", said Anfield boss Klopp.
The England global has struggled for regular game time this season, but he was also among the goals against West Ham and Origi considers him to be an important part of Jurgen Klopp's plans. So yes, a flawless afternoon.
Brazilian playmaker Coutinho struck twice in the space of four minutes midway through the second half and Divock Origi rubbed salt into West Ham's wounds as the visitors ran riot.
With Jose Fonte playing him onside, Sturridge was able to race towards goal before rounding Adrian and tucking in his first goal since January.
Origi scored Liverpool's fourth goal at the London Stadium after Daniel Sturridge's opener and two from Philippe Coutinho.More news: Arsene Wenger wants to sign want-away Chelsea striker
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After getting free on the far post on a corner kick, Andre Ayew had an open goal to shoot at, only to hit it against the post, and fall as he weakly kicked it again, somehow missing the goal once again.
"They had chances to score but they couldn't score", added Klopp.
"One is the cost and the other is they think he's a forward rather than a midfielder".
Coutinho is arguably Liverpool's most pivotal player, as the team often depends on his creative flashes.
"We will stay focused 100 per cent, we know about the difficulty of the next game, nobody will go into this game and underestimate it one per cent".
It was not the way the Hammers wanted to end what has been a turbulent first season as tenants of the former Olympic Stadium. He's a top player and an experienced player, and he's still only 24, so I think that's very special.