Let down by the defence in front of him and could do little about any of Sheffield United's goals.Relatively untroubled in the second but had Rosenior to thank for one excellent saving challenge.
Let Baxter get in front of him to poke in the opener and was troubled by Sheffield United's midfield runners on several occasions.
No more or less impressive than his lacklustre team-mates in the first half, and was perhaps a little unfortunate to be among the two men singled out by his manager's half-time changes.
Generally marshalled his defence well but was undermined on several occasions by the lapses in concentration of his full-backs.
Murphy burst past him far too easily in the build-up to Scougall's goal but he redeemed himself to an extent with an excellent last-ditch challenge to deny Flynn a likely goal.
Did nothing of note in the first half and Bruce's decision to replace him with Fryatt was almost immediately vindicated.
His movement in midfield caused Sheffield United problems all day and he laid two goals on a plate for team-mates.
Ahmed El Mohamady
Did not protect Rosenior well enough in the first half but showed greater discipline when Rosenior was shifted to the left and he held the fort on his own after the break.
Booked early on for a rash tackle, he allied discipline to his typical industry thereafter. Scored at the death to kill the game.
Circulated the ball with intelligence and provided the game's one moment of real class, jinking away from two defenders before curling the ball past Howard.
Could not regularly impose himself on Sheffield United's muscular defence but his movement and finish to score Hull's first equaliser was precise and clinical.
Not especially at fault for any of Hull's goals and was more a victim of his defence leaving him cruelly exposed as they chased the game in the second half.
Lost Sagbo once in the first half and paid the price as the Ivorian finished clinically. Could not deal with Hull's midfield runners in the second half.
Set up Baxter's opener with a brilliant cross and looks, on this evidence, as if he could have done a decent job at parent club Cardiff City this season.
Fared reasonably well against Sagbo but had more trouble with the pace and trickery of Aluko in the second half.
Troubled by Elmohamady early on he soon got to grips with the challenge and delivered a solid display.
Had a great chance to put his team 3-2 up but Rosenior got back brilliantly to snuff out the danger. Otherwise found it difficult to exert any real influence on proceedings.
Drove forward powerfully in the opening stages as Sheffield United imposed themselves but once Hull's superior midfield had tightened their grip, the game largely past him by.
Passed the ball well in the first half but could not prevent the midfield tide turning against his team after the break.
His runs from midfield caused Hull all sorts of problems in the first half and he took his goal superbly, but he faded as the match wore on.
Burst past Rosenior to set up Scougall's goal and fired in himself to give Sheffield United late hope.
Timed his dash in front of Chester to perfection to poke his team in front but most of his best work was done with his back to goal from then on.
Looked embarrassed to score the goal which put his former club out of the FA Cup, but his run and header were both excellent - even if there was no defender even in the same postcode.
Replaced Figueroa as Bruce shifted to a more attacking formation and though he did not make the breakthrough himself, he did contribute to the team's greater urgency in the second half.
Came on for Boyd at the break and made an immediate impact, turning in Huddlestone's corner after a brief scramble with pretty much his first touch.