Talking Tactics: Where the League One play-off final will be won and lost
Barnsley and Sheffield Wednesday collide at Wembley today with a place in the Championship up for grabs.
While the Owls finished 10 points ahead of the Tykes in League One, Michael Duff's side will be keen to spring a surprise.
Ahead of what promises to be an action-packed promotion decider, we analyse where it could be won and lost.
Sheffield Wednesday produced a thrilling comeback against Peterborough to reach the final, overturning a 4-0 first-leg deficit to progress 5-3 on penalties after extra-time.
Owls boss Darren Moore claimed the return fixture, which finished 5-1 after 120 minutes of football, was the pinnacle of his career as a boss.
He said: "For me, it's my best moment in terms of management.
"I couldn't have wished for it to be at a better place, under the lights at Hillsborough.
"We had a rallying call to get the fans to come out and be in full voice and they were.
"When the boys were cramping up, the fans kept them going. The boys showed great character."
Barry Bannan has been the Owls' driving force this season.
His low centre of gravity and tight control allows him to break pressure or shift between defenders before picking a pass.
The Scot, 33, has scored seven goals and assisted 12, demonstrating his ability to threaten the opposition goal and conjure opportunities for team-mates.
Given enough time and space, Bannan has the ability to pick Barnsley's defence apart.
Do not doubt Duff
Duff was appointed after Barnsley were relegated from the Championship last season and is out to prove the doubters wrong.
He said: "We are playing against a team who have broken every record going. That will be a tough game.
"But this group has broken quite a few records. Right at the very start, they got written off by everybody.
"People said, 'The club is rubbish, they have sold all their best players, what is the point of this season? We are just going to be mid-table mediocrity'.
"But we have got a day out at Wembley to hopefully prove the naysayers [wrong]."
Luca Connell has been crucial for Barnsley.
The midfielder, 22, arrived on a free after being released by Celtic last summer.
He has scored two and assisted nine this season, including setting up Liam Kitching for the decisive goal in the semi-finals against Bolton.
With Wembley calling, Connell could be Barnsley's key man.
Despite finishing below their opponents, Barnsley managed to beat the Owls in both league games this season.
They claimed a 2-0 victory at Hillsborough and romped to a 4-2 win at Oakwell in March.
Barnsley's top scorer Devante Cole found the net in both games and will be keen to make it three out of three.
While Moore's men come into the match on a high after their miracle comeback, Duff's side could have the psychological edge given their recent success against them.