There's no real pattern yet. Too many fouls and free-kicks. It's very windy - which isn't helping.

Image source, Reuters

Now now. Tom Naylor could be in trouble for Pompey here. He has just thrown the ball at Chris Maguire...

He gets a yellow but he threw it straight at Maguire's head. Stupid.

Adam Williams
BBC Sport at Fratton Park

Well there's certainly no holding back going on from both sets of players in the early exchanges.

Sunderland clearly fancy an early goal to knock all the energy out of Portsmouth and quieten this notoriously raucous home crowd.

Can all 22 players out there keep it up though?

Image source, Portsmouth v Sunderland

More pressure from the Black Cats.

George Honeyman cannot adjust in time to get on the end of Bryan Oviedo's teasing cross from the left flank.

The visitors are getting numbers into the box. No signs of sitting on what they have so far.

That challenge by Evans doesn't get better on review. Very high and more than a bit reckless.

Sunderland are having slightly the better of things so far.

That early caution looks like it's going to be par of the course. It's been a 'busy' start all round the pitch.

A feisty beginning at Fratton Park.

Pompey's Gareth Evans goes into the book very early on. It's a high challenge that catches Lee Cattermole around the chops.

Image source, Reuters

As expected there is a fair noise emanating from the Pompey fans.

But it's Sunderland who are first to show with Grant Leadbitter sending a curling effort towards goal.

It was a pretty standard save for Craig McGillivray.

Away we go at Fratton Park. This could well be lively.

Portsmouth get us under way.

The teams are out, the pretend friendly pre-match handshakes all done. Not long now.

We will have a minute's applause for former Pompey defender Jon Gittens, who died at the age of 55 last week.

Image source, Getty Images

Comebacks are very much the footballing fashion. Is Fratton Park about to witness another one? If the pattern of the past 10 days or so continues Pompey will be 3-0 down on aggregate at the break and win 4-3.

Whadyyya reckon?

Send us your thoughts on who's off to Wemberleee and why via #bbcefl

Image source, Getty Images

And this very much depends if you're a glass half-empty or glass half-full sort of football fan....

Positive Portsmouth

• Pompey boss Kenny Jackett has not lost any of his previous three home play-off matches, winning two.
• Portsmouth are unbeaten in seven home matches against Sunderland, winning five of the meetings since losing 4-1 in the second tier in November 1997.
• The Black Cats finished the season losing consecutive away games.

Smiley Sunderland

• Portsmouth have never won a play-off match in five attempts.
• The last League One side to overturn a first-leg play-off deficit and reach the final were Yeovil Town in 2012-13 against Sheffield United.
• Sunderland have won 13 away games in all competitions this season.

Although rights restrictions prevent us from streaming live audio commentary of tonight's League One play-off semi-final second leg, you are still able to tune in to your local BBC radio station for extensive coverage of your team.

You can click here for the complete list of BBC local radio stations and frequencies.

Adam Williams
BBC Sport at Fratton Park

Well, what a week we've already had for play-off semi-final drama. Is more in store here tonight between two heavyweights of this division?

Portsmouth will hope there is and it falls in their favour having never won a two-legged play-off match in their history but are unbeaten against Sunderland in their past seven home meetings.

But, Sunderland will fancy their chances too of being able to blunt Pompey's attacking threat - as they did on Saturday.

Image source, Rex Features

Sunderland won't be seeing Aiden McGeady wheeling away in delight tonight. The influential winger was injured in the warm-up before Saturday's first leg and is not even a substitute.

First-leg matchwinner Chris Maguire starts for the Black Cats with the experienced Grant Leadbitter also coming in to the side. Duncan Watmore is on the bench for the first time since March.

Sunderland: McLaughlin; Flanagan, Oviedo, O'Nien, Ozturk; Cattermole, Leadbitter, Honeyman, Power, Maguire; Wyke.

Subs: Ruiter, Matthews, Dunne, Gooch, Morgan, Watmore, Grigg.

Image source, Rex Features

Portsmouth make three changes from their trip to the Stadium of Light, with skipper Brett Pitman, Viv Solomon-Otabor and defender Lee Brown all returning.

Top-scorer Jamal Lowe, Ronan Curtis and Anton Walkes drop to the bench.

Portsmouth: MacGillivray; Thompson, Burgess, Clarke, Brown; Naylor, Close; Solomon-Otobor, Pitman, Evans, Hawkins.

Subs: Bass, Walkes, Morris, Dennis, Curtis, Lowe, Vaughan.

Let's check on the team news, starting with the hosts...

Just like last night, both Portsmouth and Sunderland have a glorious history and a huge fan base.

Pompey's support can be staggeringly loud, and they will need that backing as they look to turn this one around.

Chris Maguire scored the only goal when the sides met on Saturday. Will it be enough?

Image source, Rex Features

The play-offs are magnificent aren't they? A trifle unfair at times, given league positions and so on.

(Leeds fans look away now).

Image source, Reuters

Derby's Championship play-off semi-final win over Leeds was pretty special for all sorts of reasons.

Will Sunderland and Portsmouth serve up some similarly spell-binding drama in their League One play-off second leg?

Sunderland hold the advantage after winning 1-0 at home in the first meeting. But first-leg leads seemingly mean diddly squat this season.

Welcome along. Let's see what unfurls at Fratton Park.