|Ledesma 80||Venue: Riverside Stadium
|Maierhofer 16, 30|
STEFAN Maierhofer scored twice to lift Millwall out of the relegation zone.
The Austrian striker headed in two Lee Martin crosses to put the Lions in control at half time and they held on to win despite Emmanuel Ledesma's late goal.
Millwall's starting XI was unchanged following the draw with Watford last time out, although there was an alteration to the bench as Scott McDonald came in for Ryan Fredericks.
Fresh from his Player of the Year award, David Forde made another vital contribution to the Lions' season when he tipped Danny Graham's shot onto the post in the seventh minute.
Captain Alan Dunne glanced wide from a corner at the other end before Maierhofer headed into the side netting as Millwall found their feet.
And they took the lead just after the quarter-hour mark when Maierhofer rose above a flat-footed Boro backline to power home Martin's hanging cross.
Martin then cut inside from the left flank before sending a fizzing drive narrowly over the bar as the Lions grew in confidence after taking the lead.
Forde made his second crucial save of the afternoon to deny Jacob Butterfield from close range after Graham's flick on created a dangerous opening.
But Martin and Maierhofer combined again to double the visitors' lead with a near-carbon copy of the first goal, a close-ranger header from another perfect delivery.
Martyn Woolford nearly made it 3-0 after being picked out by a stunning Scott Malone pass, but Chelsea loanee Nathaniel Chalobah got back to block the winger's shot.
After half time, Emmanuel Ledesma's miscued cross nearly brought the hosts back into the game but his looping delivery landed on the roof of Forde's net.
In the 65th minute, Ledesma went for goal again but curled well wide of the far corner from 25 yards.
Substitute Steve Morison spurned a golden chance to make it 3-0 within minutes of his introduction, failing to make the most of being put through on goal by Dunne.
Morison then turned provider for Woolford, whose first-time shot was palmed to safety by Boro keeper Dimi Konstantopoulos.
But Boro halved their deficit with ten minutes to go and it was a case of third time lucky for Ledesma as he placed a 20-yard free kick into the top corner.
Martin had a goal disallowed for offside during four minutes of added time, but Millwall held onto their one-goal lead to claim a priceless three points.