As things stand then, Exeter will meet Blackpool at Wembley for a place in League One, unless Carlisle and/or Luton can turns things around.

Image source, Rex Features

A problem for Blackpool defender Tom Aldred as he falls to the ground and needs treatment for what seems to be a muscle injury.

The amount of time that treatment is taking is not exactly endearing himself to the Hatters fans as he trudges to the main home stand.

Carlisle create their best opening so far, from a long ball, but Jamie Devitt's curling shot goes just wide of the far post.

The late evening sunshine in Devon is causing some problems for Carlisle's backline and their keeper Mark Gillespie, as it is shining right into their eyes as it sets just above the level of the pitch, where there is no terrace behind the corner flag.

Tricky conditions for the visitors to contend with.

Alan Sheehan's free-kick hits the wall and goes out for a corner which is aimed towards Dan Potts but dealt with by the Blackpool defence.

Luton are on top right now. Can they make it pay?

James Law
BBC Sport Online at St James Park

Image source, Rex Features

If you're here for the goals (let's face it, who isn't?!) this is a stat for you.

That early Ollie Watkins finish is the seventh time Carlisle have gone behind against Exeter this season - so far Keith Curle's side have eventually equalised every time, winning two and drawing their other meeting this term from losing positions.

What does that mean? Well, plenty of twists and turns to come...

It's a case of nearly but not quite for Luton so far but they are in the ascendancy now and Isaac Vassell is fouled by Neil Danns about 25 yards from goal.

Perfect Alan Sheehan territory.

Just as I say that Luton nearly get in thanks to a lovely exchange from Pelly-Ruddock Mpanzu and Danny Hylton on the edge of the both, but no-one in an orange shirt can get a shot away.

That's enough to get the Kenilworth Road crowd off their seats.

Carlisle's Jamie Proctor needlessly looses the ball near the left-hand touchline, which gets a big cheer from the happy home fans. The Grecians are enjoying themselves so far.

So far this match has been characterised by petty free-kicks and inaccurate passing from both sides. Blackpool will be pretty chuffed with how they've prevented Luton getting into their stride.

Hatters boss Nathan Jones is looking rather animated on the sidelines...

Carlisle look to respond quickly through Reggie Lambe, but his jinking run is eventually ended expertly by Jordan Moore-Taylor's well-timed tackle, on the edge of the area.

Frustrating for Luton as right-back James Justin breaks free down the wing, but his cut back into the middle can't find a team-mate in orange and the move breaks down.

Danny Hylton is a dangerous man up front for Luton Town.

He already has 26 goals so far this season, and latches onto a long throw down the left, runs into the area and shapes to shoot, but is tackled just as looked to pull the trigger.

I reckon there are some nervous legs in the Carlisle defence. There have just been a few jittery clearances.

Exeter will want to put them under pressure early on, and they're doing that so far through Ollie Watkins.

The atmosphere at Kenilworth Road is white hot, but at the moment it's a bit of a battle in the middle of the park, with neither side really able to get a foot on the ball so far.

You feel the first goal in this tie - currently 3-2 on aggregate to Blackpool - will be crucial.

Mark Cullen is already getting booed by the Luton Town fans.

The Blackpool striker scored a hat-trick against his former side at the weekend to put his team in charge against the Hatters.

He just tried to find Nathan Delfouneso in the middle, but it's cut out by a defender.

Exeter almost have the first chance of the night as the energetic Ollie Watkins looks to race in behind to meet a flicked-on long ball, but the Carlisle keeper Mark Gillespie is alert to gather it.

This tie is of course level as things stand, 3-3 on aggregate.

Just in case you didn't know, the away goals rule does not apply in the EFL play-offs, so if these two draw tonight after 90 minutes, we'll have extra time, and maybe even penalties.