|Venue: The Den
MILLWALL suffered their third straight home defeat as Darren Pratley's clinical second-half strike handed Bolton three points.
The Lions should have had a penalty early in the second half when Lee Gregory was brought down by Andy Lonergan but referee Stuart Attwell saw nothing wrong.
Replays showed clear contact on Gregory as he lifted the ball over the goalkeeper, who would surely have been sent off had the officials made the right decision.
But Millwall were poor thereafter and can have no complaints about the final result.
Bolton's winner came in the 68th minute when Pratley latched onto Lee Chung-Yong's pass, evaded Danny Shittu's sliding challenge and finished superbly.
Ian Holloway's side offered little in response and were booed off at the end.
Mark Beevers withdrew from Millwall's starting line up with illness, paving the way for Alan Dunne to return to the defence alongside Shittu.
Shittu, who skippered the Lions to a 1-0 win at Brighton in their previous match, retained the armband despite club captain Dunne's inclusion in the side.
Unbeaten in their last six, Bolton made a confident start at The Den and had plenty of early joy down Millwall's left-hand side behind full back Scott Malone.
They duly carved out the first opening of the evening when Darren Pratley's shot deflected behind and Tim Ream's header from the corner was parried by David Forde.
Bolton were were almost caught out on the break when Magaye Gueye's clever ball over the top was cut out just before it reached Lee Gregory.
In the 15th minute, Scott McDonald's flick found Malone on the overlap but his low cross into the danger area was hacked clear.
The Lions almost went ahead when Gregory brought down Gueye's pass on his chest but the striker rifled narrowly wide of the far post.
Shaun Williams drilled wide from distance before Rob Hall got goal-side of the home defence, only to shoot tamely at Forde.
But the Millwall goalkeeper was required to make a more meaningful save moments later when Pratley caught hold of a first-time shot, which was pushed away.
Angel Martinez almost marked his home debut with a goal but, on the stroke of half time, he steered a half-volley wide of the target from Andy Wilkinson's cross.
The Lions' start to the second period was encouraging but they had two penalty appeals turned down in quick succession during a spell of pressure.
First Gregory burst in behind the Bolton defence before his heels were clipped by Lonergan and then McDonald was bundled over seconds later.
But ref Attwell was unmoved by both challenges, prompting Holloway to go ballistic in the dugout.
Malone's 53rd-minute strike was held by Lonergan following good work by Gueye as Millwall continued to push.
But Gueye was withdrawn soon after and the Lions missed his energy.
Visiting manager Neil Lennon threw on ex-Den midfielder Liam Trotter and he almost scored with his first touch, but Forde was equal to his drive.
Bolton winger Rob Hall then struck the inside of the post before the ball cannoned off Forde and, fortunately for the Lions, away to safety.
But Wanderers eventually took the lead through Pratley's well-taken strike, which arrowed across goal and into the roof of the net.
Millwall's one and only chance to rescue a point came when Martyn Woolford burst through but Lonergan sprinted off his line to smother the midfielder's shot.