* Liverpool beat Watford 3-0 to keep pressure on Manchester City
* Mohamed Salah opened the scoring in 67th minute
* Trent Alexander-Arnold added brilliant free kick
* Jordan Henderson sent off for Liverpool before Roberto Firmino added late third
* Liverpool extended their unbeaten start to 13 games
* Watford play Leicester City next, Liverpool host Everton
Nov 24 (Reuters) - Liverpool maintained pressure on table-topping Manchester City with three second-half goals sealing a comfortable 3-0 victory at Watford on Saturday.
After a largely uneventful first half, Mohamed Salah put the ball past Watford goalkeeper Ben Foster in the 67th minute before England defender Trent Alexander-Arnold scored a stunning second goal.
The 20-year-old beat Foster with a brilliant whipped free kick from 25 metres nine minutes later, before his international team mate Jordan Henderson was dismissed for a second bookable offence.
Liverpool were not hindered by their numerical disadvantage, however, with Roberto Firmino adding a late third goal as the visitors extended their unbeaten start to the Premier League season to 13 games.
Juergen Klopp’s side remain second with 33 points and trail Champions City by two points after Pep Guardiola’s side beat West Ham United 4-0 on Saturday. Watford slipped to eighth after a third game without victory. (Reporting By Tom Hayward; editing by Clare Fallon)