Roger Federer, Rafael Nadal, Elina Svitolina and other winners from Day 6 of US Open
Photos from Day 6 of the US Open that saw players like Roger Federer, Elina Svitolina and Rafael Nadal move into the round of 16

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Five-time champion Roger Federer brushed aside 31st seed Feliciano Lopez 6-3, 6-3, 7-5 to take his career record against the Spaniard, playing a 63rd successive Grand Slam, to 13-0. AP

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Philipp Kohlschreiber, of Germany, reacts after defeating John Millman 7-5, 6-2, 6-4. The German will next face Federer, against whom he has never won a match in their previous 11 encounters. AP

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Nadal, 31, saw off Argentine lucky loser Leonardo Mayer 6-7 (3/7), 6-3, 6-1, 6-4, taking his record over the World No 59 to 4-0. He will next face Ukraine's Alexandr Dolgopolov, against whom he is 6-2, for a place in the quarter-finals. AP

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Austrian sixth seed Dominic Thiem defeated France's Adrian Mannarino 7-5, 6-3, 6-4 to make the last 16 for the third time in four years. AP

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However, Thiem will first face Argentinian Juan Martin del Potro in the next round. The 2009 US Champion Potro beat Spain's Roberto Bautista Agut 6-3. 6-3, 6-4 . AP

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Top seed Karolina Pliskova, the runner-up in 2016, triumphed 3-6, 7-5, 6-4 but was forced to save a match point in the 10th game of the second set and recover from a break down in the decider to win and hang on to her World No 1 ranking. AP

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The biggest threat to Pliskova's run and ranking is the fourth seeded Elina Svitolina. The Ukrainian stayed in contention with a 6-4, 7-5 win over Shelby Rogers of the United States.

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Russia's Daria Kasatkina reached the last 16 of a major for the first time by seeing off French Open champion Jelena Ostapenko, the 12th seed, 6-3, 6-2. AP

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Madison Keys, of the United States, waves to the crowd after defeating Elena Vesnina, of Russia, despite losing the first set. She booked a round of 16 berth by defeating the Russian 2-6, 6-4, 6-1. AP