Super sub Fabio Carvalho sent Anfield wild by scrambling home a Liverpool winner and finally breaking Newcastle's resolve eight minutes into stoppage time.
Jurgen Klopp 's Reds had been basking in the afterglow of Saturday's nine-goal annihilation of promoted Bournemouth as they returned to Anfield looking to secure back-to-back victories.
Liverpool managed to do just that but it took a last-gasp strike to do so as summer signing Carvalho turned home in a penalty-box melee to lift the roof off Anfield and seal a memorable 2-1 triumph.
