Julian Gray scored the winner as Coventry beat Barnsley at Oakwell.
Barnsley nearly went ahead when Darren Moore's header was saved by Kieren Westwood, before Freddy Eastwood's cross-shot put the visitors in front.
Elliott Ward hit the post for the Sky Blues before Barnsley levelled through Brian Howard's clinical finish.
Gray won it when he curled left-footed into the corner and Barnsley's day went from bad to worse when Iain Hume picked up a second yellow card near the end.
Barnsley manager Simon Davey:
"Morale is high at Barnsley. The dressing room is fine, they're disappointed they lost today but they know they're a good side.
"You don't perform like they did in the first half and think that you are a bad team. The performance level was good. We have to take that on the next game."
Coventry manager Chris Coleman on Freddy Eastwood:
"He'd done everything but score up to today. He's that little bit extra special, he's brought something we hadn't possessed in the squad.
"He can create a goal at nothing. If you've got that you've always got the edge.
"He's almost like a cult hero already as he was at Southend and Wolves. There's plenty more to come from him."
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