Same against Huddersfield from what I can remember. The dropping of Ritchie that match was absolutely comical.
Ritchie was only half fit for that game if I remember rightly, Rafa only wanted to use him if strictly necessary.
If a player is half available for a match, he's available for it in full imo. Played the whole 90 mins vs Reading IIRC after this match as well.
I think I would trust Rafa and his medical team over your head full of broken biscuits on such a matter like.
Player is only available for half a game... make him play 90 mins and risk injury