Wigan Athletic are four points clear of Burton at the top of League One - and 10 points ahead of third-placed Bradford - after a 1-0 win over Coventry.
Will Grigg scored the only goal to secure Wigan’s fifth win on the spin, and extend their unbeaten run to 20 matches.
It was Grigg’s 23rd goal of the season, and his 15th in the last 16 games, making him the first Latics striker since Nathan Ellington 11 years ago to score 20 league goals.
Latics could also the luxury of a missed penalty midway through the second period, after Conor McAleny had been tripped in the area.
However, Grigg’s side-footed kick was well saved by Reice Charles-Cook, diving to his left.
At the other end, Jussi Jaaskelainen made a couple of routine saves, but wasn’t made to work overly hard for a 17th clean sheet on his 34th Latics appearance.
Ex-Wigan striker Marc-Antoine Fortune appeared off the Coventry bench for the last half an hour, but a couple of miscued efforts that flew wide of the mark were in keeping with much of his unhappy two-year stint at the DW.
One goal was always likely to prove decisive, with City content to sit back and look to counter from the off, and Latics struggling to hit their straps for much of a disappointing first half.
Yanic Wildschut saw plenty of the ball in the opening exchanges, skipping past his full-back with regularity without producing an end product to match.
Sam Morsy fired wide from a good position before John Fleck had City’s first chance, which saw Jaaskelainen help the ball round the post.
A poor header from Stephen Warnock then allowed Jodi Jones to advance on goal, but his weak shot was parried by Jaaskelainen and cleared by Donervon Daniels.
Wildschut had the crowd on its feet with a rampaging run on the half-hour mark that was only ended when he was tripped by Fleck for a clear yellow card.
McAleny lined up the free-kick from 25 yards, but his effort didn’t get past the Sky Blue wall.
The on-loan Everton man then crossed for Daniels to head goalward, although it was easily pouched by Charles-Cook.
Latics started the second period with a spring in their step, with Grigg twice and McAleny almost getting in on goal.
McAleny volleyed wide of the mark from just outside the box on 52 minutes, before Latics eventually broke the deadlock.
A great move involving McAleny and Leon Barnett saw Max Power’s dummy affording Warnock plenty of freedom down the left.
The cross in was perfect, and Grigg steered the ball home at the near post to give the league leaders the lead.
Coventry’s response was to throw in former Latics striker Fortune - who was, somewhat harshly, greeted by a chorus of boos - to join fellow ageing substitute Joe Cole.
But it was Latics who continued to dominate and they should have killed off the game midway through the second half.
However, after McAleny had gone to ground under contact from Fleck, Grigg saw his spot-kick well saved by the Coventry goalkeeper, diving to his left.
Latics sent on Reece Wabara, Michael Jacobs and Haris Vuckic in the final quarter, which got a bit niggly as the visitors - and especially Cole - conceded a number of free-kicks which threatened to boil over at more than one point.
But the home side successfully kept their opponents at arm’s length to preserve a third home clean sheet on the spin - and cement their advantage at the top.