Ryan Mason did his best to ruin Brighton's big day - but Gus Poyet's team marked their first league match at the Amex Stadium with a late win against Doncaster.
The attacking midfielder set-up Doncaster's goal in Saturday's Championship clash and they led until seven minutes from time when substitute Will Buckley lashed home Brighton's equaliser.
But that wasn't all as Buckley made sure it was a dream competitive debut for the Seagulls at their new home with a last-minute winner.
Bongani Khumalo played 90 minutes as Reading also scored two late goals to deny Millwall in the Championship as it ended 2-2 at the Madejski Stadium.
In League One, Nathan Byrne set-up Bournemouth's best chance at Charlton with a free-kick headed just wide by Danny Ings.
That was a rare highlight for the Cherries who were already 2-0 down at that point before former Spur Johnnie Jackson converted a penalty for a final 3-0 scoreline at the Valley.
Jonathan Obika also had a day to forget in the capital as Yeovil were defeat 2-0 at Brentford. Jon played 62 minutes.