Tennis star Novak Djokovic lost in the second round of the Cincinnati Open over the weekend and appeared to struggle with stamina throughout the match. On Saturday, he attributed his on-court issues to a health condition that has been bothering him "for the past couple of years" and said it's ex...
Source: [CBS News](https://www.cbsnews.com/video/novak-djokovic-says-health-condition-has-been-bothering-him-for-past-couple-of-years/)