Swansea City sensationally leapfrogged Nottingham Forest to make it into the Championship play-off line-up after the regular season's conclusion on Wednesday night.
The Swans will face Brentford in the play-offs, while Cardiff take on Fulham.
It was Nottingham Forest and the Bluebirds who went into the clash vying to formally claim their top six spots in the knowledge they just needed a single point each from their respective clashes, while Welsh rivals Swansea City were also mathematically in the mix to jump from seventh in the table to claim a play-off place too if Forest lost and a five goal swing against was achieved in Swansea's favour.
Neil Harris' Bluebirds claimed a 3-0 lead at home against Hull City, while Forest somehow lost their clash 4-1 to Stoke City and Steve Cooper's Swans claimed a crucial 4-1 victory away to Reading, playing against 10 men for more than half the game.
After Leeds United's automatic promotion to the Premier League was confirmed last week, the coveted second-place automatic ticket to the top flight was claimed by West Brom, who edged out a 2-2 draw against QPR.
As for Brentford, West Brom's closest rival in the table, they came away with no points against a Barnsley side which won 2-1.
When are the Championship play-offs?
Wednesday evening's results mean, almost a year after this campaign started, we finally know the teams who will be facing each other in this season's play-offs.
Four teams will battle it out to head up to the top flight, with the first leg of those crucial matches taking place just four and five days after the season's end on July 22.
Here are the dates and kick-off times for the Championship 2020 play-offs, plus who will play who from the table.
First legs
Swansea vs Brentford - Sunday, July 26, 6.30pm
Cardiff vs Fulham - Monday, July 27, 7.45pm
Second legs
Brentford vs Swansea - Wednesday, July 29, 7.45pm
Fulham vs Cardiff - Thursday, July 30, 7.45pm
Championship play-off final
Winner semi-final A vs Winner semi-final B - Tuesday August 4, 7.45pm at Wembley Stadium
