After a typically commanding hour on the field, in which he notched up his fourth consecutive FA Cup third round goal, Leighton Baines was hauled off for a well-deserved rest.
At least that's what fans thought. However, as soon as he left the field he was greeted with a pair of icepacks which were immediately placed around his ankles.
Moyes was quizzed on the subject post match, saying:
Leighton has got a bad ankle problem which I need to watch and be careful with that. I felt we needed him because we have to respect the players at this level. (via BBC Sport)
Certainly stronger words than many expected.
While the injury does not seem to be a hindrance to his efforts on the pitch, it is clearly an issue and something Moyes needs to monitor closely.
Maintaining a Champions League challenge without Baines would be a particularly tough ask for this side.