Liverpool's hopes of mounting a late title challenge suffered a knock on Saturday when they were held 0-0 at home by Everton in the city derby.
Both sides had chances during a typically high tempo start before Liverpool's Craig Bellamy had a goal ruled out for offside after 10 minutes. Everton, who beat their rivals 3-0 at home in September, came closest in the second half when Andy Johnson's effort was saved by Pepe Reina after a mix-up in the home defence.
The visitors then defended stoutly to deny a frustrated Liverpool their sixth successive league win.
Third-placed Liverpool have 50 points, four behind Chelsea who visit strugglers Charlton Athletic later on Saturday. Leaders Manchester United play at Tottenham Hotspur on Sunday.