Nearly an immediate impact from one of the subs.

Ryan Kent gets by his man and sends in a low cross for Adam Armstrong, who forces a fine save from Keiren Westwood.

Meanwhile, the Owls make a sub of their own with Steven Fletcher coming on for Jordan Rhodes.

Barnsley boss Paul Heckingbottom decides to roll the dice.

He makes two changes with Alex Mowatt and Tom Bradshaw making way for Marley Watkins and Adam Armstrong.

The Tykes have now used all three subs.

First booking of the day goes to Adam Hammill for a cynical foul on Sheffield Wednesday winger Callum McManaman.

That man Adam Hammill causing danger again but Alex Mowatt can not get the ball on to his favoured left foot and the chance goes.

Barnsley just forcing themselves back into this now.

Image source, Rex Features

Having briefly fallen behind on 35 minutes, League Two leaders Doncaster go in at half-time 2-1 up at Grimsby, thanks to a brace from John Marquis.

Having drawn Donny level on 38 minutes, he popped up with a header from a Gary McSheffrey corner to put the visitors ahead on 43 minutes.

Meanwhile, in the Premier League, Liverpool are now 3-1 up at home to Everton in the Merseyside derby.

The hosts threaten for the first time this half with Adam Hammill putting a dangerous ball into the box that the visitors do well to clear.

Barnsley's players were really not impressed with Sam Winnall's celebration and a couple have let their unhappiness be known with some firm challenges.

The visitors think they have a second through that man Sam Winnall but the assistant referee has his flag up.

Image source, Rex Features

Barnsley goalkeeper Adam Davies tried to shepherd the ball out for a goal kick but Adam Reach picked his pocket and squared for ex-Barnsley man Sam Winnall to tap in.

Winnall was being booed by the home fans already and his celebration will have won him few friends at his old club.

Meanwhile, there have been two quick goals in League Two, with Grimsby momentarily taking the lead before leaders Donny promptly equalised.

Sam Jones had volleyed the hosts in front, before Rovers striker John Marquis turned in at the far post moments later to make it 1-1.

There are around six minutes left of the first-half in that game.

Barnsley full-back Andy Yiadom is now looking like he's going to have to come off.

He's been struggling with a shoulder injury and is now replaced by midfielder George Moncur.

We're back under way and Barnsley midfielder Josh Scowen is already down but should be fine to continue.

Image source, Getty Images

We mentioned them a few moments ago, but it really has been a sorry season for Rotherham and their supporters.

The Millers have had three managers, won just four of their 38 matches and are rooted firmly to the bottom of the Championship table.

If they fail to beat play-off hopefuls Fulham they will be relegated back to League One after a three-year stay in the second tier.

So, with the not-so-merry Millers in mind we're asking you what's the worst season you've been involved with as a player or fan.

Ever played in a team that lost every single fixture? Were you an Aston Villa season ticket holder last season? Follow Derby County home and away in 2007-08?

Get in touch with your tales of woe at #bbcefl. Remember, a problem shared is a problem halved.

At Blundell Park, it remains goalless at the half-hour mark, but the leaders have had chances to break the deadlock.

Gary McSheffrey has seen a back-heel cleared off the line by Grimsby's Gavin Gunning, while Donny's Tommy Rowe was denied by a good save from James McKeown.

Also still to come this afternoon at 15:00 BST are 10 League One games, including a key fixture in the play-off race as seventh-placed Millwall host fourth-placed Scunthorpe.

Meanwhile, following the conclusion of Grimsby v Doncaster, the remaining 22 sides in League Two are all in action too.

In the hunt for promotion to the third tier are sixth-placed Luton and fifth-placed Blackpool, who meet at Kenilworth Road this afternoon in a key game for both sides.

In fact, speaking of League Two leaders Donny...

Image source, Getty Images

Coming up at 15:00 BST we have a busy programme of EFL action, including a further nine Championship games.

The top three sides in the second tier are all at home to relegation-threatened opposition, as Newcastle host Wigan, Brighton play Blackburn and Huddersfield welcome Burton.

Meanwhile, at the bottom, 24th-placed Rotherham's fate could be mathematically sealed today - they will go down if they fail to win at home to seventh-placed Fulham, and even that might not be enough to save the Millers today, should other results go against them.

Image source, Empics

Even so far at Oakwell.

The hosts have probably had slightly the better of the chances with defender Angus MacDonald seeing a header cleared off the line.

Owls midfielder Sam Hutchinson has been forced off with a knee injury.

Into three minutes of added time.

Andy Yiadom is back on the pitch for the closing seconds... So, I mean, there you go. Maybe he is going to be able to carry on after all.

Callum McManaman, who hasn't scored in five years, has another shot off target for the Owls.

Barnsley are going to finish the half with 10 men as full-back Andy Yiadom heads down the tunnel to get some treatment.

He's been struggling most of the game after picking up an early knock. I'd be surprised if he comes back out.