Per Carrie Muskat:
He limped off the field, and tried to convince manager Rick Renteria to let him keep playing. Instead, Castro had an MRI and X-rays, which showed no fracture or ligament damage.
Something is getting lost in the translation from what the Cubs doctors told the baseball staff. Although I don't have a direct quote from the Cubs medical staff, what gets lost in translation is simple to repair.
An ankle sprain is ligament damage. That's what ankle sprains are. Starlin Castro has a grade 2 high ankle sprain. I'll translate that in what follows.
Presenting the TCR, "ABC's" to ankle sprains, after the jump...