Charlton suffered heartbreak on Wednesday evening when Stephen Fletcher pounced in the fifth minute of stoppage time to plunder all three points for Wednesday.
Elsewhere, it was the second night of bad night of results for the Addicks. Though Hull and Middlesbrough lost again, Barnsley and Wigan both won, leaving Lee Bowyer’s side hovering perilously, just two points above the drop zone.
Defeat at Huddersfield on Saturday could see them drop into the relegation zone.
On a bitterly cold night in South Yorkshire, there was no lack of endeavour from either side, but there was precious little quality football on show.
Charlton had their moments, and came closest when a second-half Lyle Taylor thunderbolt rebounded off the bar. The game seemed to be drifting towards a 0-0 stalemate until Fletcher’s late intervention.
The Owls were awarded a contentious free-kick on the right hand touchline. The Addicks failed to clear their lines when the ball was swung in, and Fletcher nipped in to nod home.
It was the fourth time this season that Charlton have lost a game in added on time. They are staying in Yorkshire to prepare for Saturday’s crunch game at Huddersfield.
After the game, a disappointed Bowyer reflected on the game and his task of lifting the players for Saturday.
“I’m disappointed and frustrated and angry because my players gave absolutely everything and they didn’t deserve to come away with nothing tonight.
”I spoke to the ref afterwards and he explained that it was because our players sandwiched. (Nuhiu), a six-foot seven striker got sandwiched. It’s a contact sport, I’m sure it’s still a contact sport. There was minimal contact and then he gave a foul.
“It was about a metre in front of me and it was never a foul. It’s becoming a non-contact sport now… That’s the way that it is going anyway.
‘It’s wrong because we deserve to come away with a point. And we leave with nothing over a decision.
“We’re in every game. We’ve just played a very good Sheffield Wednesday side at home, and we’ve competed with them.
“We hit the bar and they made a great block. Lyle Taylor had a nailed-on goal but that was some block from the centre-half. We were in there and we were causing them problems.
“If we had just taken care in the final third. Young Alfie Doughty cutting across the pitch and then hits an under-hit pass. They are the things that decide between winning and losing and I thought that we did well at times.
“Yeah they’re a good bunch and they’re honest and no matter what game they go into they give one hundred percent. Its not going to be hard to pick them up.
“They’re going to be disappointed tonight but they’ll be training tomorrow so it shouldn’t be too hard to pick them up,” said Bowyer.
Charlton: Phillips; Matthews, Lockyer, Oshilaja, Pearce, Doughty; Cullen, Oztumer (Lapslie 56), Davis; Taylor, Bonne (Green 74).
Subs (Not Used): Amos, Purrington, McGeady, Smith, Hemed.
Sheffield Wednesday: Dawson, Palmer,Lees, Borner, Fox; Murphy, Lee, Bannan, Harris (Fletcher 57); Forestieri (Da Cruz 79), Wickham (Nuhiu 74)
Subs (Not Used): Wildsmith, Pelupessy, Hunt, Windass.
Goal: Fletcher 90.
Referee: Oliver Langford (West Midlands)
Attendance; 21,370.