Novak Djokovic stands in the way of Marin Cilic at ATP Finals

NEW YORK, NY - SEPTEMBER 09: Novak Djokovic of Serbia reacts during his Men's Singles final match against Juan Martin del Potro of Argentina on Day Fourteen of the 2018 US Open at the USTA Billie Jean King National Tennis Center on September 9, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA)
NEW YORK, NY - SEPTEMBER 09: Novak Djokovic of Serbia reacts during his Men's Singles final match against Juan Martin del Potro of Argentina on Day Fourteen of the 2018 US Open at the USTA Billie Jean King National Tennis Center on September 9, 2018 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Chris Trotman/Getty Images for USTA) /
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Novak Djokovic is the top seed in his group at the 2018 ATP Finals. He locks in his semifinals appearance and stands in the way of Marin Cilic.

Whether or not Marin Cilic reaches the semifinals in London is largely dependent on his meeting with top seed Novak Djokovic. The Croatian tennis veteran can set himself up to advance if he fares well against the world number one. German Alexander Zverev, however, is also in action against American John Isner and could pose a threat.

Both Cilic and Zverev are 1-1 so far at the 2018 ATP Finals in London.

Previously, the young German took down Cilic but fell to the top seeded Djokovic in his second match. Djokovic, meanwhile, has been cruising through his time at the ATP Finals. He continues to own the O2 Arena in London. His history there is littered with success. Both Djokovic and Roger Federer have proven themselves in London and 2018 has been more of the same. Even Federer, who dropped his opening match, rebounded with back to back wins.

Novak Djokovic faces Marin Cilic in his final group stage match at the 2018 ATP Finals in London. Cilic is in need of a strong win if he hopes to advance to the semifinals. If he does not, the Croatian tennis star may lose out to Alexander Zverev. The German takes on John Isner next.

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Here’s a look at the ATP Finals standings as of Friday. Cilic and Zverev are fighting for their lives in London. Novak Djokovic is a lock to advance, as is Federer and South African Kevin Anderson. Federer and Djokovic are amidst a battle for the world number one ranking in men’s singles tennis. Both tennis legends have dominated the 2018 ATP World Tour. Stay tuned to see how the action in men’s singles unfolds at the O2 Arena this week.