Ferguson praised the performance of all of his squad after the win at the DW Stadium.
“The first 20 minutes it was all Wigan, (they had) some great attempts. We’ll have to thank our goalkeeper Edwin van der Sar who was terrific, he stood up very well and made two or three very good saves,” Ferguson told Sky Sports.
“We got the goal from a little breakaway, it was a terrific finish from Chicharito, of course, that’s what he’s good at.
“Second half I thought we played really well. Excellent performance in the second half – we could’ve scored a few more goals.”
Javier Hernandez scored two of United’s goals, while Fabio and Wayne Rooney scored the others.
Ferguson added: “He is very, very good.
“You’re hoping he gets those chances and he does put them away, his percentage is very high and we’re very pleased with his performance today.”