ATP Kremlin Cup: Janko Tipsarevic upset in second round; champion Andreas Seppi through

Last Updated: 16/10/13 9:47pm

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Janko Tipsarevic: Wasn't able to force a break-point opportunity against his teenage opponent

Janko Tipsarevic: Wasn't able to force a break-point opportunity against his teenage opponent

Sky Bet

Teenager Karen Khachanov caused a major upset at the ATP Kremlin Cup, knocking out third seed Janko Tipsarevic to reach the last eight in Moscow.

The 17-year-old thrilled his home crowd with a sensational 6-4 6-4 victory that saw him slam down 14 aces. He also didn't face a break point against the two-time US Open quarter-finalist.

Next up for Khachanov will be either Ivo Karlovic or Denis Istomin, who came through first round matches in contrasting fashion.

Karlovic eased past Denis Kudla 6-2 6-3 but Istomin needed three sets to eliminate Andrey Kuznetsov, recovering from a disastrous opener to eventually triumph 6-0 2-6 6-1.

Kazakhstani qualifier Andrey Golubev surprised another seed to reach the quarter-finals, dispatching the sixth-ranked Horacio Zeballos 6-3 6-4.

Reigning champion Andreas Seppi sealed his progression with a 6-3 6-2 result against fellow Italian Paolo Lorenzi.

The second seed will now face Edouard Roger-Vasselin, the Frenchman ousted Sergiy Stakhovsky 7-5 7-5, for a place in this year's semi-finals.

Meanwhile, eighth-seeded Frenchman Adrian Mannarino made an early exit, losing his opening match 3-6 6-4 6-4 to Teymuraz Gabashvili of Russian

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