Djeidi Gassama hit a dramatic late equaliser to deny Coventry victory on a night when Kasey Palmer was booed by a section of home fans.
Mark Robins’ Sky Blues were on course for third win over Sheffield Wednesday this season after debutant Victor Torp’s spectacular shot from nearly 30 yards on the stroke of half-time.
Yet the Owls were not to be denied and levelled in the 85th minute through Gassama.
Coventry winger Palmer was the victim of racist abuse during his team’s 2-1 Championship victory at Hillsborough last Saturday.
Images showed a member of the crowd making gestures at the former Chelsea trainee.