Trent Alexander-Arnold was left stunned by Dominik Szoboszlai's fitness as the pre-season tests began.
The Hungarian is Liverpool's most expensive summer signing thus far, arriving from RB Leipzig for £60m. He will help re-energise the club's midfield, which was cited as a weakness last season, and has already shown he has quite the engine on him.
A host of the Liverpool squad recently reported back after their summer breaks with Szoboszlai and Alexander-Arnold rocking up at the same time. They were instructed to do a fitness test - known as the lactate test - which involves continuous running, gradually upping the pace until it was completed or they could go no more, with blood samples taken to assess certain readings.