QPR have only kept one clean sheet in 14 home games under Mark Warburton across all competitions, and they conceded against the run of play against Hull after goalkeeper Joe Lumley's error.
Hull City came from behind to beat Queens Park Rangers in the Championship at Loftus Road.
QPR opened the scoring in the 20th minute when midfielder Ilias Chair fired a low shot into the bottom corner.
But Hull were gifted an equaliser 12 minutes later as Rangers keeper Joe Lumley spilled Josh Bowler's cross and George Honeyman was on hand to tap home.
And Grant McCann's side sealed all three points in the 89th minute when Jackson Irvine diverted in Jarrod Bowen's free-kick.
Hull had failed to win any of their four previous fixtures in the Championship, and they were second best for much of the first half, deservedly falling behind when a well-worked short corner found Chair, who fired home through a crowd of players.
And the hosts were nearly 2-0 up moments later when Hull defender Stephen Kingsley blocked Luke Amos' shot which looked destined for the net.
But QPR, who have only kept one clean sheet in 14 home games under Mark Warburton in all competitions, conceded against the run of play after Lumley's error in the 32nd minute.
The 24-year-old went some way to atone for his mistake by saving Josh Bowler's curling effort in the first-half, while Hull keeper George Long was also kept busy, denying Chair a second before half-time and keeping out a dangerous Ryan Manning cross in the second half.
Rangers then went close to retaking the lead, with substitute Jordan Hugill inches away from a Nahki Wells' cross in with eight minutes remaining.
But Bowen's late free-kick found Irvine unmarked at the far post and the Australian gave the Tigers all three points to lift them up to 12th in the Championship table, with QPR falling to 15th.
QPR manager Mark Warburton said:
"We gave away a really soft goal and had to respond, which we did. But we didn't put the ball in the back of the net. Then the second goal is unacceptable, simple as that.
"Joe has pulled off a couple of wonderful saves recently and has been very, very good.
"He had a tough time earlier. I made a change [selecting Liam Kelly] earlier in the season and that's the right thing to do - to look after players and when I think the time is right, to change.
"It's about what the right decision is for the team and for the player as well.
Hull City boss Grant McCann told BBC Radio Humberside:
"I thought it was a good win, it's always a difficult game here. We knew that before the game, they're a very technical team.
"We had to find a different way today. We dropped, didn't give them any space and waited for opportunities on the break.
"I said to the boys, 'treasure this feeling' after the game. But we don't need to have these up and down rollercoasters every week, it's not good for my heart to be honest."
