Zamora played quite a few games for QPR last season in the premiership, so I think he must be close in terms of fitness to last 90 minutes in the championship if needed.We do have players who can cover for Baldock - Manu, Murphy, even LuaLua can play centrally, and there's Harper to come. They may not do the job as well as Baldock, but if they did it better they wouldn't be cover, would they, they'd be straight in the team ahead of him.