At half-time, United have fought back to 2-2 having been two goals down early on, with Chris Smalling and Wayne Rooney scoring the goals.
Quick half-time analysis
Defence: United were a shambles at the back early on, with the pairing of Chris Smalling and Jonny Evans not inspiring confidence at all. David De Gea wasn't particularly culpable for either goal, but neither was he seen to be sorting out his back line or directing the players in front of him.
Patrice Evra lost his man and then the headed duel for the opening goal, while a complete mess between the entire defence contributed to the second.
Midfield: Darren Fletcher has been relatively impressive on his return to the team and helped wrest back control of the ball thereafter with some good work on and off the ball. United dominated the middle part of the first half and Tom Cleverley was able to get into some good advanced positions.
Attack: Wayne Rooney recovered from a poor start and a frustrated couple of fouls to score one and set-up the other, with his strike a top class effort. United look the closer to a third goal largely thanks to his efforts, but the game is still far too open for either manager's liking.
Second half quick analysis
Defence: United were poor all game long at the back. De Gea flapped and missed punches but ended up making a vital last-minute save to win the two extra point. Smalling was atrocious in his defensive work but also poor in possession. Evans far more aggressive. United went through three different right-backs as a result of injury and Valencia's red card.
Midfield: A strange performance where United alternately dominated for long spells and looked incapable of dealing with Hull's fast counters and strong pressing. Ultimately Ashley Young provided two excellent crosses after switching to the right, one of which led to the winning goal.
Attack: Rooney was heavily involved in the good and the not-so-good but his goal was wonderful and he offered great delivery from set pieces all game.