My thoughts remain with the victims of the earthquake and tsunami in Japan.Kirby Lee/Image of Sport/US PresswireRafael Furcal, shaky sparkplugIt says something about how concerned people are with the Dodgers offense that even as pitchers Vicente Padilla, Jon Garland and Ronald Belisario have dropped off the probable Opening Day roster, the hitting is still the Dodgers' primary concern. And not without good reason.But there are a number of ways, not even high-apple-pie-in-the-sky ways, that the Dodgers offense could exceed the lowest expectations and prove adequate, if not above average. Here are some potential upsides for the batsmen:250 total bases from Rafael FurcalThe Dodgers want Furcal to be reasonably healthy and reasonably productive. Reaching this milestone would indicate that