Hull moved level on points with Cardiff at the top of the Championship table after a 2-1 win at Derby on Friday night.
Abdoulaye Faye headed home early in the second half as victory at Pride Park for the third successive season saw Steve Bruce's team climb up to second place in the table ahead of Saturday's fixtures.
Robert Koren put the visitors in front but Michael Jacobs levelled things up on the stroke of half-time. Hull had to survive some late pressure from Derby but the team with the best away record in the division held on for a fourth successive win on the road.
The opening quarter of the match was entertaining despite a lack of goalmouth action, with Derby regularly earning the appreciation of their supporters for the way they pressurised Hull high up the pitch and suffocated the Tigers' attacks at source.
Jacobs looked threatening down the left and it was good link-up play between him and Will Hughes after 18 minutes that brought the crowd - at 25,442 the biggest at P...