Worst sports injuries of 2013

The year in sports was messy, especially in the injury department, where no major franchise was spared a visit to the team trainer and an extended stint on the reserve list. While being an athlete comes with its share of professional hazards, there were some truly gruesome moments this year that not only damaged the bones, joints and tendons of some of our favorite players but took a huge toll on the rest of the team too. From Rob Gronkowski's season ending injury to the perhaps irreversible damage Marc Staal suffered after taking a speeding hockey puck to the eye, here are our picks for the year's most cringe-worthy injuries.