Many observers , including the UFC commentator Joe Rogan , thought that Kim had broken a rib during the bout .
Rib was later revealed that Kim suffered a major muscle spasm while defending Maia 's takedown attempts .
Many observers , including the UFC commentator Joe Rogan , thought that Kim had broken a rib during the bout , but it was later revealed that he suffered a major muscle spasm while defending Maia 's takedown attempts .