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Wesley Koolhof and Stefanos Tsitsipas advance to the doubles quarter-finals in Miami.

Koolhof/Tsitsipas Stun Second Seeds In Miami

Dutch-Greek duo advance to quarter-finals

Wesley Koolhof and Stefanos Tsitsipas produced the upset of the doubles tournament at the Miami Open presented by Itau. The Dutch-Greek tandem stunned second seeds Jamie Murray and Bruno Soares 6-3, 4-6, 10-7 on Sunday afternoon on Court 6.

Competing in their second tournament together, they had dropped a tight opener to top seeds Lukasz Kubot and Marcelo Melo in Indian Wells. But Koolhof and Tsitsipas found their chemistry in a flash in Miami, following a straight-set win over Karen Khachanov and Daniil Medvedev with the dismissal of the second seeds.

Koolhof and Tsitsipas will next face John Isner and Sam Querrey in the quarter-finals, after the Americans rallied past Rajeev Ram and Joe Salisbury 5-7, 7-6(2), 10-7. The duo has reached three ATP Masters 1000 finals together and clinched the title in Rome in 2011.

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Elsewhere, Maximo Gonzalez and Horacio Zeballos stunned 2014 finalists Juan Sebastian Cabal and Robert Farah 6-4, 3-6, 10-7 to reach the quarter-finals. Zeballos has been a force on the doubles court this month, having lifted the BNP Paribas Open trophy with Nikola Mektic a week ago. He and countryman Gonzalez recently took the title in Buenos Aires after finishing runner-up in Cordoba.

In other action, Ivan Dodig and Edouard Roger-Vasselin set a meeting with Matwe Middelkoop and Diego Schwartzman, after the Croatian-French team defeated Marc Lopez and Feliciano Lopez 6-4, 6-3. Middelkoop and Schwartzman also progressed on Sunday, needing 65 minutes to dismiss sixth seeds Raven Klaasen and Michael Venus 6-4, 6-3.

Arguably the most efficient victory of the day was provided by Rohan Bopanna and Denis Shapovalov, who routed Marcel Granollers and Nikola Mektic 6-1, 6-2 in just 52 minutes. They could potentially face the five-time champions and third seeds Bob Bryan and Mike Bryan in the quarter-finals. 

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