Martinez fouled a ball off his left foot during an extended spring training game Monday but X-rays were negative, Evan Woodbery of MLive.com reports.

It was the "other" foot -- Martinez is currently working his way back from a sprained lisfranc ligament in his right foot -- and apparently no significant damage was done. That said, Martinez was sore coming out of Friday's extended spring game, and this incident may further delay his return to the outfield. Martinez will need to show ample mobility in the outfield before the Tigers active him.

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