Mohamed Salah set up Sadio Mane's 100th Premier League goal and scored a brilliant goal of his own, while Roberto Firmino bagged a hat-trick as Liverpool reclaimed top spot with a 5-0 win over Watford in Claudio Ranieri's first game in charge.
The visitors took the lead in the ninth minute when Liverpool won a Watford kickout, and Mohamed Salah played a sublime pass to Mane with the outside of his left boot for the Senegalese striker to notch his Premier League century.