Table-toppers prolonged their outstanding unbeaten run with a commanding three to one scoreline against ten-man Watford.
The Coventry manager's squad began to a perfect beginning with their striker and the midfielder netting the goal within the first seven minutes.
Another Coventry attacker added a third advantage just before the interval, while a Watford defender was dismissed before the half.
A Watford player converted a spot-kick for the away squad, but it turned out to be nothing more than a meaningless strike.
The home side's goalkeeper Carl Rushworth had before blocked a one-on-one opportunity for the winger, which could have swung the game early on.
Frank Lampard said: “That was a tough game this afternoon because the opposition are a quality side.”
The substitute came off the substitutes to net the lone goal in a one-nil victory over West Brom.
The home side controlled the match but only broke the goalless draw near the end thanks to Clarke's 5th goal of the season.
West Brom thought they had scored in added time, but the goal was chalked off for a infringement in the penalty area.
A Portsmouth defender scored a unfortunate own strike to give Mark Robins' team a 1-0 win.
John Mousinho's men have now managed just a single match since the conclusion of last month.
The Stoke manager commented: “It was among the vital wins we’ve achieved this campaign.”
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