Norwich City secured promotion to the Premier League with a 2-1 victory over Blackburn Rovers at Carrow Road on Saturday.
Daniel Farke's side needed only a draw to guarantee their place in the top flight next season, with third-placed Leeds United six points behind them with two games remaining.
The Canaries went one better, though, with superb goals from Marco Stiepermann and Mario Vrancic sending them back to the top of the Championship and guaranteeing they will play Premier League football next season.
Sheffield United had moved top with a 2-0 win over Ipswich Town, but Norwich looked set to overtake them once more when Stiepermann drilled a good finish beyond Jayson Leutwiler with 13 minutes played.
The party atmosphere in East Anglia increased when Vrancic sent an unstoppable strike into the top-left corner from 30 yards, although the home fans were quietened when Lewis Travis beat Tim Krul with a low effort only two minutes later.
Typically one of the division's best attacking sides, Norwich were far more prosaic in the second half as they looked to hold onto their advantage, although they still managed 24 shots to Blackburn's eight.
The final whistle was eventually greeted by rapturous cheers, as Norwich celebrated being back in the top tier for the first time since being relegated in 2015-16.
Sheffield United look almost certain to join them in automatic promotion, as the Blades hold a six-point advantage over Leeds and a goal difference of 37 compared to 24.
It means anything but a win for Marcelo Bielsa's side against in-form Aston Villa on Sunday will force them to settle for a play-off spot.