And we were there to capture some brilliant Sunderland fan pictures from the Stadium of Light stands, courtesy of Frank Reid.
Ross Stewart's goal separates the sides, meaning the tie remains on a knife-edge ahead of the return leg at Hillsborough, where the Owls have an outstanding record this season.
Boss Alex Neil was left a touch frustrated that their sides could not make more of some excellent chances at the start of the second half, but had no qualms with his side's overall display.
And he spoke of his delight at managing in front of a crowd of almost 45,000, the largest attendance in EFL play-off history.
The return leg takes place on Monday night.
Wycombe Wanderers and MK Dons are in the other semi-final, Wycombe with a 2-0 lead heading into Sunday’s second leg.
1. Superb support!
Sunderland fans pictured at the Stadium of Light for the Sheffield Wednesday play-off semi-final clash. Picture by Frank Reid
Photo: Frank Reid
2. Sunderland have a 1-0 lead
Sunderland fans pictured at the Stadium of Light for the Sheffield Wednesday play-off semi-final clash. Picture by Frank Reid
Photo: Frank Reid
3. A record EFL play-off attendance at the SOL
Sunderland fans pictured at the Stadium of Light for the Sheffield Wednesday play-off semi-final clash. Picture by Frank Reid
Photo: Frank Reid
4. Fans show their passion
Sunderland fans pictured at the Stadium of Light for the Sheffield Wednesday play-off semi-final clash. Picture by Frank Reid
Photo: Frank Reid