VideoWatch: Gravenberch, Isak and Wirtz get to work in Liverpool's Sunday session

The three got their pre-season preparations under way having joined the Reds’ USA tour this weekend after being involved at the World Cup.

Gravenberch, Isak and Wirtz were straight to work during a session that included recovery for those players involved in the 4-2 win versus Sunderland in Nashville the previous day.

Take a look below.

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