Table-toppers extended their outstanding unbeaten run with a dominant three to one performance against ten-man Watford.
The home side's team got off to a ideal beginning with Brandon Thomas-Asante and Jamie Allen netting the back of the net within the first seven minutes.
Another Coventry attacker made it a 3-0 goal just before the interval, while James Abankwah was shown a red card before the break.
The midfielder scored a penalty for the losing side, but it turned out to be nothing more than a consolation strike.
Coventry's goalkeeper Carl Rushworth had earlier denied a clear chance for Watford, which could have altered the contest early on.
Lampard stated: “This was a tough match today because they are a good team.”
An Ipswich player came off the sideline to fire the only strike in a one-nil success over the visitors.
Ipswich dominated the match but only found the deadlock late thanks to Clarke's 5th strike of the season.
Ryan Mason's side thought they had netted in stoppage time, but the header was chalked off for a foul in the area.
A Portsmouth defender headed a second-half own strike to give Stoke a one-zero result.
John Mousinho's men have currently managed just one fixture since the close of the summer.
Mark Robins remarked: “That was one of the most important successes we’ve secured this season.”
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