Tomas Berdych put the Czech Republic 2-0 up in their Davis Cup semi-final with Argentina in Prague.
Radek Stepanek faces Argentina's Juan Monaco in the opening singles of the Czech Republic's Davis Cup semi-final.
Organisers have announced the seedings for the US Open and Roger Federer is seeded only seventh.
Round-up: Novak Djokovic and Rafa Nadal joined Andy Murray in the third round of the Cincinnati Masters with straight sets wins.
Round-up: Grigor Dimitrov knocked out 13th seed Nicolas Almagro on a day of upsets at the Cincinnati Masters.
Spain's Marcel Granollers won the fourth ATP title of his career in Kitzbuhel by beating Juan Monaco in the final.
Round-up: Roger Federer beat Florian Mayer 7-6 (4) 3-6 7-5 to reach the semi-final of ATP Hamburg.
World number five Roger Federer strolled past Jan Hajek to progress into the quarter-finals of ATP Hamburg with a 6-4 6-3 win.
Round-up: Roger Federer came from a set down to beat Daniel Brands 3-6 6-3 6-2 at the German Open in Hamburg.
ATP rankings on Monday, with Milos Raonic up two places.
ATP World Tour rankings:
Round-up: Top seed Novak Djokovic ended the first week at Wimbledon by brushing aside Frenchman Jeremy Chardy.
Roger Federer has crashed out of Wimbledon after a shock 6-7(5) 7-6(5) 7-5 7-6(5) defeat to Ukrainian Sergiy Stakhovsky.
Andy Murray continued his unfussy Wimbledon campaign by progressing to the third round with a 6-3 6-3 7-5 win over Lu Yen-Hsun.
ATP World Tour Finals
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