I think we could reasonably expect the bullpen (especially Lidge) to get better. Wheeler will have a better second half, and Qualls continues to be solid. On the starters, Pettitte will pitch better, Clemens will be solid, but I'm very wary of counting on Backe. I hope I'm wrong.
On offense, I'm still nervous. Berkman is the key, obviously, but Ensberg is essential. Lamb and Ausmus will slow down. Wilson, despite his horrific ups and downs, will dependably provide what he has always done. Biggio has usually declined in the seond half, unless I'm mistaken.
On Lane, Burke/Taveras I don't know what to expect.