They have left themselves without any option in LF. That happened as soon as they retained Willingham. They also don't have anyone that looks like they are going to hit well at DH. Kubel, Parmelee and Colabello have projections that center around a .700 OPS. If they had a Thome or Ortiz at DH, of course it makes sense to play a Willingham in LF. They don't. Use Willingham at DH. Keep his legs healthy and try to maximize his return at the plate. Find some defense in LF that can approach the 700 OPS expected of the trio above. Even falling short, the rest can be made up with the glove. Our fly ball pitchers deserve better.