Table-toppers continued their impressive victory sequence with a commanding 3-1 performance against a player-down their opponents.
The Coventry manager's lineup got off to a ideal start with their striker and Jamie Allen netting the back of the net within the opening minutes.
Another Coventry attacker added a three-goal goal just before the break, while a Watford defender was shown a red card before the half.
A Watford player scored a spot-kick for the losing side, but it proved nothing more than a meaningless effort.
The home side's goalkeeper Carl Rushworth had before saved a golden opportunity for Watford, which could have changed the game early on.
The Coventry boss commented: “That was a tough fixture now because the opposition are a quality outfit.”
Jack Clarke was introduced from the substitutes to score the lone strike in a 1-0 success over West Brom.
The home side controlled the game but only broke the goalless draw near the end thanks to Clarke's 5th goal of the campaign.
West Brom thought they had netted in stoppage time, but the effort was ruled out for a infringement in the area.
A Portsmouth defender scored a unfortunate mistake to give Mark Robins' team a 1-0 victory.
John Mousinho's men have currently secured just a single match since the end of the summer.
The Stoke manager remarked: “It was one of the crucial wins we’ve achieved this season.”