Huddersfield Town and Peterborough United go head to head at Old Trafford on Sunday for a place back in the npower Championship.
For the Posh it would be an immediate return following their relegation in May, while for the Terriers they are looking to get back to the second tier of English football for the first time in 10 years.
Eight points separated them in the npower League 1 table, with Huddersfield finishing one place above Darren Ferguson's side in third.
That counts for nothing on Sunday though with the only thing that matters, the score on the day.
Terriers boss Lee Clark has been impressed by his side all season, not least when they almost took Arsenal to a replay in the FA Cup and he's hoping experiences like those can help this weekend. They also go into the game 23 games unbeaten.
Speaking to www.htafc.com he said:" The lads will be nervous, but that is normal, the prize at stake is massive. They want to do well for everyone involved with the Club; they are looking forward to playing at one of the best footballing arenas in world football.
"The lads enjoy playing in front of big crowds, which was highlighted at the Emirates when they put in a superb performance.
"We will play the game and not the occasion; we are up against a very good team in Peterborough and we know what they are all about. I have got huge respect for Darren (Ferguson) and his staff - he is a good guy - but from 3pm on Sunday I want to beat him. I believe the respect is mutual; we have had some good encounters this season and hopefully Sunday will be another."
So far this season everything Craig Mackail-Smith has touched has turned to gold, he's scored 34 goals in all competitions and earned his first call-up to the Scotland squad, now there's only one way to better it, with a win at Old Trafford.
The 27-year-old has already achieved two promotions with Posh after he helped Dagenham & Redbridge achieve their Football League status. The Play-Offs is a whole new experience but one he's ready for, as he told www.theposh.com.
"We are playing a match in a fantastic stadium and we can't wait to get started, but it might be the only time some of us play at Old Trafford and we don't want to spoil it by losing.
"We have total confidence in our ability and it would be the greatest achievement in my time at the club if we were to win promotion back to the Championship.
"At Christmas it didn't look like we would even make the Play-Offs, but we have stuck together and now we are one game away from a massive achievement."
HEAD TO HEAD
Sunday's match will be only the 23rd meeting between the two sides, the first of which came back in 1957 in the FA Cup.
Huddersfield won 3-1 back then and then had to wait 17 years to play again, when both sides were in the old Division Three.
Posh achieved the double in their first season of league matches, winning 2-1 at Huddersfield before achieving the same scoreline at home seven months later.
They have not achieved the feat again since but the Terriers have done it twice in the 2001/02 season and the 2004/05 season.
They met three times during the course of this season, twice in the league and once in the Johnstone's Paint Trophy with both sides winning one while the other match finished all square.
The first game came at London Road back in August when Peterborough, under Gary Johnson, ran out 4-2 winners with Aaron Mclean scoring twice. George Boyd and Craig Mackail-Smith were also on target for the home side who came from 2-0 down after Jordan Rhodes and Graham Carey scored for the visitors.
Mclean and Carey were both on target again in October when they met in the Johnstone's Paint Trophy at the Galpharm Stadium.
This time Lee Clark's side went 3-0 up thanks to goals from Carey and Anthony Pilkington who scored twice.Second half goals from Mclean and Mark Little set up a nervous finish but Huddersfield held on.
The third meeting came last month and the home side needed an injury time equaliser to earn a point against Darren Ferguson's side. Grant McCann gave the visitors the lead on 41 minutes, when he converted from the penalty spot. Jack Hunt scored his first ever senior goal to secure the draw, after coming on as a second half substitute.
The Terriers currently edge the head to head by 10 wins to seven, while five games have ended all square, we know that's not an option this weekend but which way this one goes is anyone's guess.
For both teams this will be the third time they have reached the Play-Off final and it's so far so good with two wins from two.
Huddersfield reached their first final in 1995 when they faced Bristol Rovers in the Division 2 final at Wembley. Town ran out 2-1 winners with Andy Booth scoring the winner.Chris Billy was also on target for the Terriers, while Marcus Stewart scored for the Pirates before swapping clubs 12 months later.
Their second final was played at Cardiff's Millennium Stadium, when they took on Mansfield Town for a place in Division 2. The game ended goalless after extra time but Town won 4-1 on penalties.
Last season Lee Clark's side missed out on a place at Wembley after losing out to Millwall at the semi-final stage. The first leg at the Galpharm ended goalless but they were beaten 2-0 at the New Den, thanks to goals from Steve Morison and Paul Robinson.
Peterborough's first appearance at Wembley came in 1992 when they took on Stockport County for a place in Division 2. Two goals from Ken Charlery gave the Posh a 2-1 win, with Kevin Francis netting the consolation for the Hatters.
Their last Play-Off final was in 2000 as they chased a place in Division 2 again. This time Darlington were the opponents and a solitary goal from Andy Clarke secured their promotion.
As a player Darren Ferguson played in the Play-Offs twice with Wolverhampton Wanderers but failed to get beyond the semi-final stage. In 1995 they lost 3-2 on aggregate to Bolton Wanderers before going down 4-3 on aggregate to Crystal Palace two years later.
Since taking charge at London Road, he's already achieved back to back promotions, taking the Posh from League 2 up to the Championship, before leaving the club. Now he's back and looking for more success.
Steve Tanner will take charge of Sunday's match with his assistants Peter Bankes and Charles Breakspear, while Mick Russell has been appointed Fourth Official.
It will be his 46th game of the season, a period which has seen him issue 131 yellow cards and 12 red, including one in his final match when he sent of Crystal Palace's Dean Moxey, in their 3-0 home defeat to Nottingham Forest on the final day of the season.
The Referee from Somerset has taken charge of Huddersfield three times already this season, twice in npower League 1 and once in the Johnstone's Paint Trophy. The first match was back in September when he refereed the Terriers' 1-0 defeat at Swindon Town, issuing just two yellow cards.
He was also in charge when Lee Clark's side ran out 3-0 winners over Carlisle United in the Johnstone's Paint Trophy Area final, when the Cumbrians went through 4-3 on aggregate.
His final game was last month when Town secured a last gasp 3-2 win over the Champions Brighton & Hove Albion at the Withdean Stadium.
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