Cameron Archer's goal early in the second half delivered the 1-0 victory, delighting the large travelling PNE support.
Archer will get the headlines for his goal but Hughes was excellent at the back, while Iversen produced a superb first-half save.
Here are the PNE player ratings from the game.
. PNE player ratings: Hull City 0 Preston 1
Preston North End players applaud the travelling fans after the win against Hull CIty Photo: Andrew Kearns/Camerasport
. Daniel Iversen 8
The goalkeeper made a superb save from Eaves at point-blank range at 0-0, somehow blocking with his thigh. Iversen also saved well early doors from Bernard. Photo: Press Association
. Sepp van den Berg 7
Stayed strong at the back when Eaves pulled over to his side to enter into a battle with him. He used the ball well going forward too. Photo: Andrew Kearns/Camerasport
. Patrick Bauer 7
Nice and solid in the middle of the back three, Bauer won his battles and played his part in the clean sheet. Photo: Andrew Kearns/Camerasport
. Andrew Hughes 8
Impressive performance from the Welshman on the left side of defence, he didn’t put a foot wrong. Only the woodwork denied him a goal at the other end. He's been so consistent this season. Photo: Press Association
1. Daniel Iversen 8
The goalkeeper made a superb save from Eaves at point-blank range at 0-0, somehow blocking with his thigh. Iversen also saved well early doors from Bernard. Photo: Press Association
2. Sepp van den Berg 7
Stayed strong at the back when Eaves pulled over to his side to enter into a battle with him. He used the ball well going forward too. Photo: Andrew Kearns/Camerasport
3. Patrick Bauer 7
Nice and solid in the middle of the back three, Bauer won his battles and played his part in the clean sheet. Photo: Andrew Kearns/Camerasport
4. Andrew Hughes 8
Impressive performance from the Welshman on the left side of defence, he didn’t put a foot wrong. Only the woodwork denied him a goal at the other end. He's been so consistent this season. Photo: Press Association