Liverpool boss Jurgen Klopp revealed new signing Diogo Jota has exceeded even his own expectations after netting the winner against West Ham on Sunday (AEDT).
With the match tied at 1-1 and the Reds seemingly missing a cutting edge going into the final 20 minutes at Anfield, Klopp called his latest addition from the bench.
Jota had a goal ruled out following a VAR review just seven minutes later but belatedly got his match-winning moment with five minutes of normal time remaining, linking up with fellow substitute Xherdan Shaqiri to score.
That Kop-end strike - his only shot that stood - was the Portuguese's third goal in his past three outings for the club and fourth overall since arriving from Wolves in a deal worth up to £45 million (A$83 million) in September.
When asked if the scale of Jota's impact had surprised even him, Klopp told BBC Sport: "Yes, of course.
"We fought really hard that we could sign him - we didn't have to convince him too much but we really had to fight for it.
"We knew that he is an exceptional talent. He has everything I love in a football player; he has the speed, he has the physicality, he has the technique, he is both-footed, he is clear in mind, very football smart."