Coventry moved eight points clear at the top of the Sky Bet Championship with a 3-0 win over struggling Preston.
Goals from Tatsuhiro Sakamoto and Brandon Thomas-Asante in the first half were followed by Matt Grimes' penalty after half time.
The Sky Blues' sixth consecutive win opened up an eight-point gap to second-placed Middlesbrough, who lost at home to Charlton, and returned them nine points clear of third-placed Millwall.
Meanwhile, a third defeat on the bounce left Preston with just one win in 11 games.
Sakamoto scored his first goal since November in the 2-0 win over Bristol City on Saturday and made it two in two in fortunate fashion.
Frank Onkeya's crossfield pass was headed into the path of the Japanese winger, who took aim from outside the box and saw his effort take a wicked deflection off Ben Whiteman, leaving Daniel Iverson wrongfooted in the Preston goal.
The former Leicester stopper was making his first start since mid-January after missing the last 10 games with a groin injury, one of five changes by Paul Heckingbottom.
The Dane had already been called into action by Onyeka's sweetly-struck volley which he parried over the bar for a corner.
Frank Lampard's men doubled their lead just past the half hour mark through Thomas-Asante, who scored his first goal since November 4.
Liam Kitching's back-post header fell to Ellis Simms, whose determination meant he was able to get a shot off which was spectacularly pushed onto the bar by Iversen, and Thomas-Asante was on hand to bundle in from close range.
The trio were part of four changes made by Frank Lampard following the win at Ashton Gate on Saturday, which saw top scorer Haji Wright dropped to the bench despite scoring six goals in Coventry's five home games in 2026.
Preston arrived at the league leaders after back-to-back defeats to Oxford and Millwall and rarely threatened in the first half.
Spurs loanee Alfie Devine's near post free-kick was headed goalwards by Whiteman, who forced Carl Rushworth to make a strong save.
The Sky Blues extended their lead at the start of the first half when Pol Valentin was adjusted to have brought down Ephron Mason-Clark in the box.
Captain Grimes stepped up to send Iversen the wrong way to score his second goal of the season.
Mason-Clark went on a mazy run before lifting his effort over the bar as Coventry looked to add to the 77 goals they've racked up the season.
Substitute Josh Eccles then also shot over the crossbar after a delightful cross in from Jahnoah Markelo as Coventry strolled to a comfortable 23rd win of the season.
Coventry's Frank Lampard:
"It was an all-round performance. The approach, the focus was clearly evident from the start of the game.
"The way we moved the ball, the quality of our play, the chances we created, the focus to not give away transition and it all starts with counter pressing.
"It was very, very complete in how we dealt with a very tricky game for us. Preston are no bad team and we played really well.
"It's nice to establish a gap, we focus on ourselves, we're obviously aware of other results but we're at the point now where we have to go game by game.
"Southampton comes along really quickly and we know how quickly points can swing in this league because you play so much, nine games is 27 points so we can be happy with the performance tonight but we have to go again, onto the next one, and have that clinical mentality about us which we showed tonight."
Preston's Paul Heckingbottom:
"We knew it was going to be a difficult place to come because they're really at it, and they were really hungry from minute one - how they competed, when they lost the ball, how quickly they went to try and win the league back.
"It took us a few minutes to get to grips with that. We weren't brilliant with the ball all night. I thought we were a bit loose under their pressure.
"The first goal, you can say they've earned their luck because they were playing well but we're disappointed with that, obviously not much we can do about it.
"The second goal we are disappointed with because we lost three first contacts in the box, Dan [Iversen] makes a good save and again, that hunger and drive from them, that's why they're up there, it's why they're scoring all the goals.
"The third is not a penalty, their lads said it wasn't a penalty, we know it's not a penalty and that sort of took the game away from us."
