Steven Fletcher fired Sunderland to their first Barclays Premier League victory of the season with his fifth goal in four games.
The 25-year-old turned James McClean's 51st-minute cross-shot past keeper Ali Al Habsi to win a match of little quality.
Wigan were made to pay for a rush of blood from Jordi Gomez, who was sent off just two minutes into the second half for a dangerous lunge at defender Danny Rose and a game in which his side had enjoyed the better of the opening 45 minutes turned on its head.
Copyright (c) PA Sport 2012, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms