LATICS crashed to an agonising stoppage-time defeat in South London that continues their winless start to the new campaign.
For the second Saturday in a row there was a match-changing goal with 93 minutes on the clock.
However, unlike last week - when James McArthur rescued a precious point against Reading - this time it was Latics who were the victims as Franck Moussa struck a shot from 25 yards that took a massive deflection on its way past the helpless Scott Carson.
Seconds earlier the Latics goalkeeper had pulled off a fabulous save to deny the same player, who had got the better of Ivan Ramis and raced clean through only to see his shot beaten away.
The Addicks, though, weren’t to be denied and undoubtedly deserved all three points for creating by far the more clear-cut opportunities.
Latics didn’t really convert their sustained spells of possession into any chances worthy of the name, save for Callum McManaman’s well-taken equaliser midway through the first half.
That had cancelled out Jordan Cousins’ magnificent goal on nine minutes, the midfielder cutting in off the left-hand side and curling a beauty past Carson into the top corner.
The result leaves Latics on one point from their two league matches played, having also made a first-round exit from the Capital One Cup in midweek.
Credit Latics, however, for not letting their heads go down and continuing to take the fight to the Addicks.
And after being kept at arm’s length for the opening quarter, they got themselves back on level terms through McManaman.
But as the clock ticked towards 90 minutes it was the home side who looked the stronger and most likely to win it at the death.
They squandered a great chance with two minutes remaining when Chris Solly’s cross was missed by Vetokele and Johann Gudmundsson’s shot was blocked by Perch.
And it looked like honours would end even when, inside added time, Moussa got away from Ramis and looked a certain scorer, only for Carson to stick up a hand a divert the ball to safety.
But Latics couldn’t hold out til the final whistle, with Moussa getting his revenge on Carson by seeing his speculative effort from distance catch a Wigan leg and loop into the net.
Read Paul Kendrick’s full report and reaction in Monday’s Evening Post