Rovers were swept aside in South Wales as Swansea City scored three unanswered goals at the Liberty Stadium.
It was a thoroughly disappointing display from a Rovers side that never got into the game.
The only surprise was that it took until the 37th minute for the home side to take the lead, Gylfi Sigurdsson clipping a delightful shot from the right edge of the area beyond Paul Robinson. A minute before the end of the first half the lead would be doubled, Nathan Dyer sweeping home after Rovers failed to clear the ball.
Rovers' task wasn't helped when Grant Hanley, Junior Hoilett and Yakubu all limped off with injuries, and after Sigurdsson's shot had hit the post and deflected back into the net off Scott Dann just past the hour mark it was never going to be their day.
David Dunn proved to be Rovers' only bright point, his curling strike that bounced off the post deserving better.
Two changes were made from the side that faced Liverpool on Tuesday. With Martin Olsson not having recovered sufficiently from a groin strain to start, his place at left back was taken by Jason Lowe, whilst Morten Gamst Pedersen was preferred in midfield to Mauro Formica.
In overcast conditions it was Rovers who started the brighter of the two sides, the early exchanges seeing Scott Dann head a Morten Gamst Pedersen corner onto the roof of the net, whilst before that Yakubu had penalty claims ignored by referee Mark Clattenburg after the Nigerian went to ground attempting to control Junior Hoilett's pass in the box.
But disappointingly that was as good as it got for Rovers in a thoroughly miserable first half display.
On 12 it took a last ditch challenge from Marcus Olsson to prevent Gylfi Sigurdsson from getting his shot away in the six yard box, moments later the Icelander tried his luck from distance but was well over.
The home side should have taken the lead on 28 minutes, but as Sigurdsson's corner was missed by Steven Nzonzi it surprised Angel Rangel, the ball bouncing off the Spaniard and behind for a goal kick, a fortunate escape.
Slowly but surely the Jacks were pressing Rovers further and further back, Jason Lowe blocked well to deny Ashley Williams before Paul Robinson had to quickly adjust to tip aside Sigurdsson's swerving shot.
From the resulting 37th minute corner Swansea would take a deserved lead. Having initially dealt with the ball in from the right, it came back to the taker Sigurdsson who this time made no mistake clipping a superb left-footed shot that flew over Robinson and into the far corner of the net.
Rovers were at sixes and sevens, Steven Nzonzi turned and faced his own goal before playing in Danny Graham, the Frenchman thankful that Paul Robinson was down quickly to his left to push the shot aside.
But that was mere respite as Swansea doubled their lead as the end of the half approached. Scott Dann had done well to block a cross with an outstretched boot, but the loose ball went straight to Scott Sinclair who shaped to shoot but instead found Graham, he did the same in shifting the ball to his right where Nathan Dyer swept the ball beyond Robinson with the outside of his right boot.
Just when you thought the half couldn't get any worse, Grant Hanley fell awkwardly in the final moments twisting his ankle in the process, the young Scot wouldn't reappear at the start of the second half, his place taken by Mauro Formica as Bradley Orr moved to centre half, Marcus Olsson to left back and Jason Lowe to right back.
In Rovers' last match they had come from two goals down, but after this disappointing first half showing it looked highly unlikely that they would do it a second time and that would prove to be the case.
They rallied briefly, when, from a Pedersen free-kick, Scott Dann headed across the area but David Dunn couldn't get a clean connection and Vorm claimed comfortably.
Injuries then started to mount for the beleaguered Rovers, Hoilett first to limp off to be replaced by Anthony Modeste before Yakubu followed suit with David Goodwillie taking his place.
On 63 minutes Swansea got a third goal and the disappointing aspect was they barely had to work for it. Scott Sinclair running unopposed for far too long before he squared it in the six yard box to Sigurdsson who was perhaps fortunate to see his shot come off the post and deflect back off the hapless Scott Dann and into the back of the net.
David Dunn had been the one bright spark on another otherwise black display, the veteran midfielder was narrowly over with a near post header from a Pedersen corner and then after finding ample space 20-yards out he clipped a lovely shot that Michel Vorm watched bounce off his left-hand post. It was a shot that deserved much more but it wasn't to be.
But it was the other end where the play continued to be focussed. Paul Robinson having to get down to save from Danny Graham, Scott Sinclair also going in search of goals with a long-range effort.
Substitute Leroy Lita tried to get in on the act with two minutes remaining but Robinson saved well and then claimed the rebound ahead of the lurking Sigurdsson.
Rovers need to pick themselves up and quickly.
SWANSEA CITY: Vorm, Williams (c), Taylor, Caulker, Britton (sub Gower 70 mins), Graham (sub Lita 85 mins), Sinclair, Dyer, Rangel, Allen, Sigurdsson.
Subs not used: Tremmel (GK), McEachran, Routledge, Monk, Moore.
ROVERS: Robinson (c), Orr, Dann, Hanley (sub Formica 46 mins), Lowe, Hoilett (sub Modeste 56 mins), Nzonzi, Pedersen, Marcus Olsson, Dunn, Yakubu (sub Goodwillie 61 mins).
Subs not used: Kean (GK), Martin Olsson, Petrovic, Rochina.
Booked: Hoilett, Formica (Rovers).