Ben Brereton Diaz scored his 20th Championship goal of the season to help Blackburn edge out Barnsley 2-1 and move within a point of the leaders, Bournemouth.
With Covid-19 outbreaks at numerous clubs in the second tier, only three of the scheduled seven games on Wednesday were able to go ahead.
Blackburn hosted Barnsley eyeing a sixth successive victory in the division but were made to work hard before they achieved it.
Joe Rothwell put the home side ahead before Barnsley levelled on the stroke of half-time through Carlton Morris. Rovers were not to be denied, however, and Brereton Diaz grabbed the winner with 25 minutes left at Ewood Park when the Chile international curled in to help his side move level on points with second-in-the table Fulham.
A stoppage-time goal from Duncan Watmore helped Middlesbrough to continue their fine form under their new manager, Chris Wilder, with a 2-1 win at Blackpool.
The deadlock was broken on the hour when an exquisite backheel by Andraz Sporar put the away side ahead. For a long time that looked enough for all three points, until Shayne Lavery equalised after the 90 minutes were up, scoring with an effort off the post.
But Middlesbrough had the last laugh, with substitute Watmore knocking the ball home from close range after a quick counterattack, giving them a fifth victory from their past six games.
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A depleted Millwall side returned to action with a hard-fought 1-0 triumph at Coventry with both clubs playing for the first time since 11 December. The Lions were only able to name seven substitutes and the majority were from the academy, but the in-form Tom Bradshaw made the difference.
After scoring in Millwall’s previous three games, Bradshaw made it four in a row when he applied the finishing touch to a free-kick into the area.