Walsall secured a spot in the League Two play-off final by defeating Chesterfield 2-1 at the Poundland Bescot Stadium, completing a 4-1 aggregate victory.
With a 2-0 advantage from the first leg, Walsall defended well and guaranteed their progress with Charlie Lakin's goal nine minutes before the end of the match.
Although Armando Dobra scored a late goal for Chesterfield, Levi Amantchi responded quickly to seal the win for Walsall on the night and in the aggregate.
Amantchi’s goal led to pitch invasions, as Walsall set up a Wembley final clash with Notts County or AFC Wimbledon on May 26.
Walsall, who lost a 12-point lead in League Two to enter the play-offs, started aggressively, aiming to score early and control the game.
Jamie Jellis had an early chance but his shot was saved by Chesterfield's goalkeeper, Ryan Boot.
In the history of the EFL play-offs, only four times has an away team managed to overturn a two-goal deficit from the first leg to reach the final.
Chesterfield threatened as Dobra tested Walsall's goalkeeper Tommy Simkin with a powerful shot from long range.
Bim Pepple tried to break through the defense for Chesterfield but was closely marked, and when he had a chance at the edge of the box, he missed the target.
Just before halftime, Pepple had another opportunity but his shot was easily gathered by Simkin.
Chesterfield thought they had scored after the break but the goal was disallowed due to a handball in the buildup.
Walsall had a great chance to seal the game with 17 minutes left, but Amantchi's finish was saved by Boot.
However, Lakin scored in the 81st minute from close range, securing Walsall's spot in the final.
Chesterfield kept pushing, but their attempts were defended well by Walsall, with McFadzean's shot blocked and Colclough's strike saved by Simkin.
After some missed opportunities for Walsall, Chesterfield scored a late consolation goal through Dobra, but Walsall responded immediately with Amantchi completing the victory a minute later.