Huddersfield’s 3-0 win over Notts County was a relief to 16th-placed Sheffield Wednesday.
A win for the Magpies would have seen them fly over the Owls, who could only manage a draw at another relegation candidate Dagenham & Redbridge.
But Huddersfield dominated County to strengthen their automatic promotion chances.
The hosts went in front when Benik Afobe crossed for Jordan Rhodes to head home.
Gary Roberts doubled the lead from Rhodes’ centre.
Rhodes notched his second with a cushioned finish after Afobe found him in space, before Njogu Demba-Nyren went close for the visitors.
The Terriers have now gone a club record 18 games unbeaten, breaking the record they set in 1925.
They sit in second position, four points clear of third-placed Peterborough while Notts are just two points clear of the bottom four and sit in 18th position. `
In League 2, Rotherham United’s slipped out of their position in the Play Off grouping, after Gillingham won 2-1 at Cheltenham, courtesy of two late goals.
The Millers are now eighth.
Cody McDonald scored two late goals to keep Gillingham in the promotion hunt.
Cheltenham took an early lead when Steve Elliott banged in Danny Andrew’s cross from close range after the Gills failed to clear a corner.
McDonald equalised on the rebound after his looped header had hit the crossbar.
In the 90th minute Adebayo Akinfenwa got behind the Robins’ defence and put in a pin-point cross for McDonald to head the winner.
Play-off chasing Oxford defeated struggling Burton 3-0 - and the visitors had two players dismissed in the second half.
Darren Moore was red-carded 11 minutes after the break for bringing down James Constable when the striker charged towards goal - and Tom Parkes followed him 13 minutes from time when he picked up a second yellow card for a foul on Constable.
Steve MacLean scored twice for the home side, sandwiching Tom Craddock’s penalty.
Yesterday’s other League Two game saw Hereford improve their survival prospects with a 1-0 win over Crewe, courtesy of Stuart Fleetwood’s 23rd-minute goal.