WATCH—Novak Djokovic dismisses Alexander Zverev at the ATP Finals:

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Novak Djokovic shows who's boss in win over Alexander Zverev in London

Novak Djokovic shows who's boss in win over Alexander Zverev in London

This Week on Tennis Channel:

ATP Finals (Sun - Sun 11.11 - 11.18) - Novak Djokovic, Roger Federer and the world's best collide in the season Finale. Live coverage begins on Tennis Channel Sunday at 7:00am EST.