Defending champion Novak Djokovic stunned by Dominic Thiem in French Open quarterfinals

His French Open title defense nearing an end, Novak Djokovic stumbled and tumbled to his knees on the red clay, his racket flying from his right hand as his opponent's backhand zipped past.

Even Djokovic found it hard to fathom how far he's fallen, only a year removed from leaving Roland Garros...