Charlton won promotion to the Championship after a dramatic 2-1 win against Sunderland at Wembley.
The winner came six seconds from the end of injury time with 93:54 on the clock.
It was centre-back Patrick Bauer who scored the decisive goal for Charlton after his header rebounded back to him off a Sunderland player and, laying on the ground, he found the net.
Ireland underage international Josh Cullen, on loan at Charlton from West Ham, played a key part in getting the ball into the box for the play which eventually resulted in the goal.
#CAFC are heading to the @SkyBetChamp! 🏆
Bauer stabs it in at the second attempt to send #CAFC up in the 95th minute!
Watch the @SkyBetLeagueOne play-off final between @CAFCofficial and @SunderlandAFC live on Sky Sports Football or follow it here: https://t.co/bJwqMbVynj pic.twitter.com/l2e4IJiOG5
— Sky Sports Football (@SkyFootball) May 26, 2019
Sunderland had taken the lead after just five minutes when Charlton goalkeeper Dillon Phillips allowed a backpass from centre-back Mahamadou-Naby Sarr to roll under his foot and into his net.
Ben Purrington found an equaliser for Charlton 30 minutes after his teammates' calamity.