|Dagnall 56, Scotland 67||Venue: Oakwell
MILLWALL were brought back down to earth with a bump after their FA Cup heroics against Aston Villa by defeat at Barnsley.
Second-half goals from Chris Dagnall and Jason Scotland consigned the Lions to defeat and they rarely looked like producing a comeback.
Manager Kenny Jackett kept faith with the side that started against Villa last Friday, although Shane Lowry, Martyn Woolford and new signing Rob Hulse were all added to the bench.
Both teams were slow to settle in testing conditions and it took until the seventh minute for either to register an effort at goal when Chris Dagnall dragged a shot wide from the edge of the area.
Millwall spurned a golden chance soon after when, after Adam Smith's clever backheel, James Henry whipped in a cross for Andy Keogh but the striker volleyed over from close range.
Tykes left-back Tom Kennedy blasted over from 25-yards in the 15th minute before Danny Shittu produced a crucial block to prevent John Stones' shot from finding its way through a crowded area.
Midfielder Etuhu then spearheaded a Barnsley counter-attack from inside his own half but he could only shoot wide when the ball was played back into his path 20-yards out.
On the half-hour mark, Smith's deep cross was cleared into the path of John Marquis but the Lions' hero against Villa could only scuff a first-time volley well wide.
After Harewood had waltzed into a dangerous position only to fire tamely wide, Forde was then forced to rush out to clear the ball to deny Dagnall a one-on-one opportunity.
With half-time approaching, Millwall rallied and after Keogh's weak header failed to trouble Luke Steele, Liam Feeney had a shot blocked before Liam Trotter's half-volley was saved comfortably.
Barnsley began the second period on top and nearly took the lead when Jim O'Brien's shot squirmed under David Forde, but the keeper got enough on the ball to force it behind for a corner.
In the 55th minute, Dagnall's cross-shot hit the foot of the post but the striker made no mistake with his next effort, dinking home after beating the offside trap to make it 1-0.
Marquis sought to respond for Millwall but his shot from the edge of the area was deflected wide by the head of centre-back Martin Cranie.
And the Tykes put the game to bed when David Perkins burst from midfield and slid a through ball into the path of substitute Jason Scotland, who rifled in with what was his first touch.
The Lions should have pulled one back in the 76th minute when a defensive error gave Marquis a clear run on goal, but he tried to take the ball around Steele and the keeper gathered with ease.
Barnsley sub Jacob Mellis went close to adding a third goal with a late free-kick that sailed just over but Millwall were already well-beaten.
Barnsley: Steele, Golbourne, Kennedy, Foster, Cranie, Stones, Perkins, O'Brien (Mellis, 74mins), Etuhu, Harewood (Scotland, 66mins), Dagnall (Rose, 82mins). Subs not used: Alnwick, Hassell, Wiseman, Mellis, Noble-Lazarus.
Millwall: Forde, A.Smith, Beevers, Abdou, Shittu, Osborne (Lowry, 64mins), Feeney (Woolford, 64mins) , Trotter, Keogh (Hulse, 64mins), Marquis, Henry. Subs: M.Taylor, Wright, Hulse, Batt, J.Smith.