Carlos Guillen will probably need season-ending shoulder surgery if he does not show signs of improvement soon, the Detroit Free Press is reporting. The Tigers will probably wait until the All Star break to make a decision. They’ll want to move quickly after that, because they’ll probably have to make a trade to replace Guillen in the lineup. The Tigers are in a position where they can add to their payroll if that’s what’s needed to keep them in contention.

Tags: carlos guillen, detroit tigers, injuries