David Ngog swivelled and had a shot blocked by Napoli's Salvatore Aronica as both teams had to settle for a draw.
BBC: Napoli 0-0 Liverpool
2.
Gerrard then slotted in a penalty after Salvatore Aronica brought down Glen Johnson before the Reds skipper dinked in a third to complete his hat-trick.
BBC: Liverpool 3-1 Napoli
3.
Napoli defender Salvatore Aronica was fortunate to stay on the pitch for a tackle on Ngog but Liverpool will feel justice was done when the Italian was punished for bringing down Reds right-back Johnson.