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Alisson Becker 7

The £65m keeper's distribution is going to be a major asset. Involved in the first goal with a pin-point 60-yard pass to Salah. Commanded his box well, aside from a couple of nervy moments. Made a meal of his only meaningful save.

Nathaniel Clyne 7

Back in the fold following the birth of his son and bang on it. Pressed the ball well.

Joe Gomez 7

Has grown in confidence at centre-back over the course of this pre-season.

Virgil van Dijk 8

Dominant in the air and organised those around him. Only outfield player to play 90 minutes.

Andy Robertson 7

Had his hands full with Callejon but stood up to it well. Strong in the tackle.

Gini Wijnaldum 7

A surprise choice for the holding role but showcased his versatility. Scored the second with a decent header.

James Milner 8

Hammered home the first with an emphatic finish and then created the second during the Reds' early blitz. Forced off after a horrible clash of heads early in the second half.

(Image: Charles McQuillan/Getty Images)

Naby Keita 8

Looked sharp on his return to action after a neck injury. Involved in the first goal and linked up well with the front three as he got 70 minutes under his belt.

Mo Salah 9

Struck fear into Napoli's backline as he burst forward at speed. Scored the third with a fine finish.

Roberto Firmino 8

Like he had never been away. A tireless shift on his return to club duty as he linked play intelligently. A class act.

Sadio Mane 8

Quick, skilful and a nightmare for defenders.

(Image: Charles McQuillan/Getty Images)

Xherdan Shaqiri (for Firmino 46) 7

Started centrally before moving out to the right. Couple of lovely bits of skill and whipped in some great deliveries.

Fabinho (for Milner 56) 7

Won the ball back and kept the Reds on the front foot.

Trent Alexander-Arnold (for Clyne 62) 7

Slotted straight back in as he rampaged down the right.

Alberto Moreno (for Roberton 62) 8

Completed the rout with a piledriver into the roof of the net.

(Image: Niall Carson/PA Wire)

Curtis Jones (for Wijnaldum 62) 8

Another step forward for the teenager. One lovely pass to release Sturridge.

Dominic Solanke (for Salah 62) 7

Shut down space and made a nuisance of himself.

Daniel Sturridge (for Mane 62) 8

Maintained his summer resurgence. Helped himself to the fourth goal as he hammered home emphatically.

Divock Origi (for Keita 71) 7

Better from the Belgian frontman. Troubled a tiring Napoli backline late on.

Nathaniel Phillips (for Gomez 77) 8

More precious first-team minutes for the Academy defender. Made a goal-saving block late on.