The Millers failed to capitalise during a dominant first half and were held to a draw by fellow strugglers Fulham.
With the threat of a points deduction hanging over them and their cushion from the bottom three eroded by results on Tuesday night, victory seemed vital for Steve Evans’ side at Craven Cottage.
But they squandered a first half lead after missing several chances and had to make do with a point which leaves them five points clear of Millwall with three games left to play.
There will certainly be a feeling of a missed opportunity for the Millers as they travel back up the M1 tonight.
Matt Derbyshire scored after just four minutes to get them off to the best possible start on the banks of the Thames.
But Derbyshire was among those to miss first half chances, allowing Ross McCormack to level up for Fulham and secure a point which edges the Cottagers ever closer to safety themselves.
Derbyshire almost scored mere seconds after kick-off but turned Danny Ward’s cross just wide.
But he made no mistake on four minutes as he pounced at close range to grab the opening goal.
There was no resting on laurels after Derbyshire’s early strike. Steve Evans’ men wanted to put the game to bed.
It took a clearance off the line from Jack Hunt to prevent Fulham from equalising just two minutes after Derbyshire’s opener.
Matt Smith met a corner with a header but Hunt cleared and Dan Burn’s follow-up went over the bar.
It was the visitors however with all the pressure, looking for a second.
Marcus Bettinelli produced a fine reflex stop to deny Kirk Broadfoot’s header from close range.
And the Fulham keeper reacted well to close down Derbyshire when released one-on-one.
Ward fired just wide after meeting a Ben Pringle pass as the Millers continued to push.
Emiliano Martinez produced a superb save to keep out Bryan Ruiz in a rare threat from the hosts.
Broadfoot struck the post via a save from Bettinelli in the last act of the first half.
McCormack had gone close to equalising early in the second half when he just failed to connect with a cross from substitute Tim Hoogland.
But he was on hand to equalise for Fulham on 67 minutes and set the nerves jangling among the relegation threatened Millers. Smith knocked the ball down, McCormack controlled and drilled into the far corner.
The Millers managed to kick on once more after the leveller as the game opened up.
Pringle flashed a ball across goal which scuffed off Ward’s head.
Hoogland headed over the bar from a superb McCormack cross as Fulham threatened.
But sides went in search of the winner in the dying moments but the deadlock remained.
Fulham: Bettinelli, Richards, Turner, Burn, Husband, Parker, Guthrie, Tunnicliffe (Hoogland 53), Ruiz, McCormack, Smith
Subs: Kiraly, Stafylidis, Hutchinson, Woodrow, Rodallega, Kavanagh
Millers: Martinez, Hunt, Morgan, Broadfoot, Lafferty; Smallwood, Arnason, Frecklington, Pringle; Ward, Derbyshire
Subs: Collin, Wilson, Wood, Hammill, Bowery, Milsom, Green.
Referee: Andy Davies