Individual errors all over the show. No matter who partners Keane they make basic errors. Holgate and Mina both far from good enough for a top 6 club. If they cant pick up men from crosses then maybe this is a level too high for them.
To be honest, Keane was more to blame for their first goal than Holgate, who was marking Martial. Keane had nobody to mark.
However, Fernandes should have been picked up by a midfielder. Allan and Gylfi had gone out wide and were offering nothing in stopping the cross, but then it's on Doucoure to get across or Digne to give the CB's a shout.
Not enough communication.
Keane has been decent this season but he was pretty crap today for both of their first-half goals.
I'm not sure where your stick with Holgate comes from though as he was very good last season and this one today is his first game back. Need him to stay fit and then at least our defence has a bit of consistency.
Like Carlo said, as a team we just don't defend in a shape. But it's on him to sort that out.