It was a monstrous battle between two big clubs and in something of a caldron at Fratton Park they stood up tall, producing a well thought-out and muscling effort against a side building towards automatic promotion aspirations next season.
A clinical route-one goal early doors set them up for what followed and once again one goal was all that was needed.
This Wednesday side is a menace; scrapping, balling, scratching and clawing their way towards half a year unbeaten.
Have some ratings as the Owls took another step towards a return to the Championship.
5. Liam Palmer - 7
Just unbelievably consistent. His voyage into a genuine attacking threat continues and he got himself into some very dangerous positions. Stuck at his defensive task diligently and showed versatility yet again in shifting inside for the post-Iorfa switcharoo. Photo: UGC/Steve Ellis
6. George Byers - 6
Made some excellent defensive interventions and got busy in midfield, placing a number of tempo-rattling passes. It’ll be a concern that he wasn’t able to continue after going down holding his hamstring or thigh. Off after 34 minutes. Photo: UGC/Steve Ellis
7. Will Vaulks - 8
Produced an excellent block to deny Ogilvie in the first half - a big moment. Took a clattering in a typically full-throttle defensive intervention after a stumble at the back. Wily in his management of the game particularly in the second half. Gave plenty to the Pompey technical area on a niggly afternoon. Loved every second, you rather suspect. Photo: UGC/Steve Ellis
8. Barry Bannan - 7
As usual, saw more of the ball than any other Wednesday player on a day the Owls allowed the home side plenty of possession. Buzzed about and orchestrated nicely. One ball to find James out wide was a moment of mouth-open quality. Battled like a Glasgow street fighter. Photo: UGC/Steve Ellis