WWE Champion John Cena posted to Twitter about the current state of his foot injury.  He noted that he's been able to work without extra support on his injured right foot in this post:

"Two days with zero tape and feeling (great)."

I certainly wish injury on no one, and am glad Cena is recovering.  However, I think WWE would be wise to treat it as if Cena is hurt the whole way through the pay per view.  This keeps him vulnerable as he faces Ryback at Extreme Rules for the WWE Championship.  I guess we find out tonight on Raw if he's going to play it up or not.