West Ham United boss Alan Curbishley had praise for Anton Ferdinand after defeat to Sunderland.
"We started off with [Jonathan] Spector there, then [James] Tomkins has had to come on and Specs has gone to left-back then right-back. It's been very difficult for us.
"We'll have to see if Upson will be right for Portsmouth [on Tuesday week]. We don't want to put anyone at risk so we'll just have to see what we've got ... Obviously I was a bit disappointed that a lot of my players went off this week [on international duty]. A lot of them have been playing week in, week out and I've not been in a position to rest anybody and it looks as if it'll be that way for the rest of the season."