come on man, all your posts indicate you are MUCH smarter than that. These are professional athletes - fan reaction shouldn't impact their production at home that much. That point holds about as much water as the "team chemistry" argument from last year. If you think Wrigley is a hostile environment for the home team you need to visit a few more ballparks. That place is Pleasantville compared to Comiskey, Yankee Stadium, Shea, Philly, Boston, etc. Wrigley crowds are also considerably easier on visiting players than just about any other park in MLB.