Championship summary: Coventry fail to clinch promotion, Leicester suffer further setback
Portsmouths 1-0 victory against Middlesbrough ensured that Frank Lampards squad would have locked in promotion if they had overcome the Owls.
However the weight of the moment seemed to overwhelm Coventry leading them to a unusual goalless performance at home this term.
"We normally score here, we normally win games here, so we have to keep a bit of perspective," said Lampard.
"I know there's a pressure and everyone wants to release the pressure by getting it done and now we have to move onto the next one."
The Sky Blues path to Premier League football is still a question of timing rather than doubt as they extended their lead to 12 points over third placed Millwall with four matches left and a significantly better goal tally.
Ipswich made significant progress in their quest to accompany Coventry in the elite division next year thanks to a 2-0 triumph over local opponents Norwich.
Goals in the opening period by Jaden Philogene and George Hirst achieved the first league double against their East Anglian foes in 33 years.
Kieran McKennas team now lead Millwall by two points while holding two extra fixtures in the race for direct ascent.
Middlesbroughs push for a top two position has derailed during the crucial phase of the season with six consecutive matches without success.
An deflected shot from Andre Dozzell just seven minutes into added time provided a major lift to Pompeys efforts to avoid relegation.
The win for Portsmouth has also pushed Leicester deeper into danger of dropping to the third division only ten years after their Premier League triumph.
The Foxes unsuccessful appeal over a six point penalty for financial violations came this week.
A 1-0 loss at home to Swansea positions them just above the bottom spot and four points from salvation.
Southamptons impressive streak persisted with a comeback 2-1 victory versus Derby strengthening their playoff position.
Leo Scienza and Taylor Harwood-Bellis scored for the FA Cup semi finalists as Southampton stretched their winless streak to 17 outings.