The Owls’ run of resistance was brought to a halt by a 3-1 defeat at Charlton on Saturday.
First half goals from Johnnie Jackson and Simon Makienok and a Reza Ghoochannejhad strike after the break ended the Addicks’ dismal run of recent form and inflicted a rare defeat on Wednesday.
Fernando Forestieri grabbed a late consolation but the hosts were good value for the points, taking the game to the Owls from the first whistle and duly getting their reward.
Makienok fired an early warning shot, heading just wide from El Hadja Ba’s cross, before Johan Gudmundsson was stopped in his tracks by a perfectly timed Sam Hutchinson challenge.
Wednesday grew into the game – with the effervescent Forestieri looking lively – and started probing at the Addicks’ defence.
But the home side promptly hit back – and took the lead on 25 minutes.
Gudmundsson swung an accurate corner right into the mix and the onrushing Jackson nodded powerfully home.
The goal certainly gave Charlton a spark and Gudmundsson was at the heart of the action, going close ten minutes before the interval with a half volley after swivelling on the edge of the area.
Then, on 44 minutes, the Addicks did double their advantage.
Good work down the left from that man Gudmundsson saw the Icelander’s feed fall perfectly for Makienok to drill into the net from close range.
Wednesday needed a boost and started the second half well enough, only to be undone by Charlton’s first attack.
Makienok linked up well with Morgan Fox and the latter found Ghoochannejhad, who slammed past Keiren Westwood from six yards.
The third goal might have put the contest out of Wednesday’s reach, which would certainly have been the case had Gudmonsson’s free kick gone in instead of rattling the crossbar.
But the Owls persisted and made their mark on 73 minutes when Forestieri glanced in Kieran Lee’s cross from the right.
The visitors then enjoyed the best of the closing stages but the damage was already done and Wednesday suffered their first reverse in 12 games.
Wednesday: Westwood, Hutchinson (Joao 46), Loovens (Sasso 46), Hooper (McGugan 66), Lees, Lee, Hunt, Wallace, Pudil, Bannan, Forestieri