ESPN.com - MLB - Chavez suffers 'broken' arm
"It was uncertain how long Chavez will be out."
This is not good. Losing your best player indefinitely is never a step in the right direction.
So, let's try to find some silver lining... According to The Hardball Times' stat page, Chavez has been only the ninth most valuable Athletic. In fact, he's only been about one win share better than the average third-baseman so far this year.
That kind of production should not actually be all that difficult to replace... I hope. The big problem is that Chavez has upside that can't be replaced. You can't expect a replacement player to come in and produce 25-30 win shares per season the way Chavez can.