I've seen our opponents and us secure promotion in front of my eyes at the same time. Saints v Spuds played out a 0-0 at the Dell in 1978 to seal promotion for both clubs.I've seen opponents win trophies, or avoid relegation, or be relegated, in front of my eyes. But I can't recall seeing an opponent secure promotion against us before? But that might just be me forgetting.
(I know that Ipswich can't mathematically go up tonight - but everyone knows that they're in the PL if they win, and I would expect their fans and players to celebrate as such.)