A Ben Thompson ball into the box, aimed at Millwall striker Lee Gregory, is gathered by a decisive move from Barnsley keeper Adam Davies, who came off his line to claim the dangerous-looking ball.

Barnsley's Ashley Fletcher is denied one-on-one by Jordan Archer.

From the resulting corner, there is indecision in the Millwall defence but they eventually get it away. Barnsley are causing them real problems at the back so far.

Barnsley's fans think Ashley Fletcher is through for a second goal but the ball just has enough pace on it to run safely through to Millwall keeper Jordan Archer.

BBC Radio 5 Live

Listen to live commentary of this match on BBC Radio 5 live by clicking on the audio icon at the top of the page.

Ian Brown and former Celtic manager Neil Lennon are your commentators.

BBC Radio Sheffield and BBC Radio London are also broadcasting from Wembley today - unfortunately a rights issues prevents us from streaming their commentaries online, but you can listen to their post-match programmes after full-time by clicking on the Live Coverage tab later.

Millwall are certainly getting men forward in numbers and they look to find Steve Morison in the box but Barnsley get it clear.

There has barely been a pause in play so far, but Ashley Fletcher's opener remains the only shot on target.

Yesterday, Hull City and Sheffield Wednesday played out a very cagey first 20 minutes.

Not so today! Barnsley and Millwall are both going for goals. It's fast-paced and really lively so far.

Manchester United loanee Ashley Fletcher scored in Barnsley's Johnstone's Paint Trophy win over Oxford in April, and now he's put the Tykes in front in the play-off final...

Barnsley are full of confidence and Adam Hammill has a go from range but fires over.

Millwall need to compose themselves. Seconds before the goal, the Lions had actually gone close to scoring themselves, as Mark Beevers headed very narrowly wide from a Chris Taylor free-kick.

But they have been stunned by Ashley Fletcher's second-minute goal at Wembley.

Neil Lennon
Ex-Celtic manager at Wembley, BBC Radio 5 live

Image source, PA

That early goal has come one minute earlier than Jermaine Beckford's opener for Preston in last year's League One play-off final.

Millwall, playing in blue and white, get the game started.

The teams are changing ends and look set to attack towards their own fans in the first half. Millwall have gathered for a team huddle.

Image source, Rex Features

It wouldn't be play-off final weekend without some fancy dress on show.

Barnsley and Millwall fans haven't let us down today...

Image source, Rex Features

Image source, Rex Features

The national anthem, rather beautifully sung it must be said, rings out around the home of football.

Two-and-a-bit tiers of Wembley's three are over-flowing with proud fans of Barnsley and Millwall.

Are you ready, folks? Kick-off is getting close.

The teams walk out to an expectant Wembley, half blue, half red, on a slightly overcast but mild day in north London.

Rob Stevens
BBC Sport at Wembley

Image source, Rex Features

"Millwall boss Neil Harris couldn't call on anyone more experienced than Tony Craig to come in after Byron Webster got injured in the warm-up.

"The 31-year-old, who has worked his way back from injury in recent weeks, was part of the Lions side which won the League One play-off final in 2010.

"Craig was also here three years ago with Brentford when they lost to Yeovil. Harris couldn't ask for a centre-back with more knowledge of playing at Wembley.

"Lions fans far outnumber their Barnsley counterparts here and are making an almighty noise ahead of kick-off."

In case you missed them a little earlier, here are how the two teams line up today, including one late change for Millwall.

Image source, .

Image source, .

Mohamed Diame was Hull City's hero at Wembley yesterday. Miss his wonder goal? Well, you can listen back to BBC Radio 5 live's commentary of the Senegal midfielder's 10th (and most important) goal of the season here...

Rob Stevens
BBC Sport at Wembley

I bumped into former Charlton defender Steve Brown in the press room, who is here on co-commentary duty for BBC Radio London.

He was part of the Addicks side which won the 1998 Division One play-off final on penalties against Sunderland following a thrilling 4-4 draw.

Image source, Getty Images

He doesn't want anyone else to go through the trauma of penalties though.

"I'm going to go for a Millwall win. I think there is something about what Neil Harris has achieved this year. They have gone into the play-offs with a really strong mentality. Barnsley are the in-form team but I think Millwall will make that stride and get back in the Championship," he said.

"I hope it gets sorted in 90 minutes. I wouldn't wish taking penalties on anyone. I came on as a sub for Charlton in 1998 and took one and it was terrifying. When there is so much riding on the game, to miss is horrible."