Sunderland sneaked into the Championship play-offs thanks to a crushing victory over Preston North End and Millwall's astonishing 4-3 defeat against Blackburn Rovers.
The Black Cats needed maximum points and for other results to go their way on the final day and, in a bewildering climax to the regular season, Tony Mowbray's side kept their part of the bargain in style as spectacular second-half strikes from Amad Diallo, Alex Pritchard and Jack Clarke saw them romp to victory.
Coventry City booked the other slot thanks to a 1-1 draw away against already play-off bound Middlesbrough, but Millwall squandered a 3-1 advantage at home against fellow hopefuls Blackburn, meaning they missed out to the Black Cats by a point.