Jack Sock beats Marin Cilic in straight sets at ATP Finals

By SAM JOHNSTON

LONDON (AP) – Jack Sock won for the first time at the ATP Finals on Tuesday, beating Wimbledon finalist Marin Cilic 5-7, 6-2, 7-6 (4).

Sock lost his debut match to Roger Federer, but he is now 1-1 in his round-robin group.

Cilic, who has won only one of his …

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Source:: Washington Times