Give him time, he's spent the last few years playing against the likes of Barnsley, Doncaster and Yeovil...the transition to premiership is a big step up, which i'm sure he'll evntually take. he's a quality player, and he'll get better over time.
Nah one mistake and you're finished in this game ! Shame for him. West Ham fans have been giving him glowing reports so far this season.