(Reuters) - Liverpool lacked tactical discipline against Atalanta on Thursday and fully deserved their 3-0 defeat in the Europa League quarter-final first leg match, manager Juergen Klopp said.

Gianluca Scamacca struck either side of halftime before Mario Pasalic capped an impressive win for the Italians at Anfield as Liverpool slumped to their joint-heaviest home defeat in European competition.