Warren Joyce believes Manchester United scoreline was flattering
Wigan held their own for the majority of the first-half until Marouane Fellaini put Manchester United ahead just moments before the break.
Chris Smalling doubled the hosts' lead on 57 minutes and Joyce admits at that point his Championship strugglers were "going gung-ho" to get something out of the game.
Marouane Fellaini goal ruined Wigan's efforts in the first half
United's final two goals – from Henrikh Mkhitaryan and Bastian Schweinsteiger – came in the latter stages and Joyce felt that put an unfair slant on the scoreline.
"We got all the things we wanted to do pretty much right for 44 minutes," Joyce said after the Old Trafford defeat.
"I thought we had a good method and the lads were brave.
Manchester United's FA Cup player ratings against Wigan
Sun, January 29, 2017
Express Sport brings you Manchester United's player ratings from their FA Cup fourth round win over Wigan Athletic
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Sergio Romero – 7.1
"We created the best chances with some pretty clever football and then conceded a goal you see every week in the Championship, so that's disappointing.
"For 60 minutes I was really pleased and the last 20 you can forget about because we were going gung-ho, chasing the game, and 4-0 probably flatters Manchester United."