Juan Martin Del Potro was given an easy passage through to an appealing second-round clash with Roger Federer at the Western & Southern Open in Cincinnati.
Italian opponent Andreas Seppi retired injured against Argentina's former US Open champion when trailing 4-1 in the first set of their clash.
In the only other first-round match to be played on Sunday, American wild-card entry James Blake caused an upset by beating Cypriot Marcos Baghdatis 3-6 6-3 6-2.
The high-calibre qualifying events reached their conclusion, with Czech player Radek Stepanek and Japan's Kei Nishikori among those reaching the main draw.
On the women's side of qualifying, Czech Petra Cetkovska and Japanese veteran Kimiko Date-Krumm got through the final round but qualifying top seed Maria Jose Martinez Sanchez lost to Petra Martic.
Meanwhile, Polish 11th seed Agnieszka Radwanska has withdrawn from the tournament, citing a shoulder injury.
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Italian opponent Andreas Seppi retired injured against Argentina's former US Open champion when trailing 4-1 in the first set of their clash.
In the only other first-round match to be played on Sunday, American wild-card entry James Blake caused an upset by beating Cypriot Marcos Baghdatis 3-6 6-3 6-2.
The high-calibre qualifying events reached their conclusion, with Czech player Radek Stepanek and Japan's Kei Nishikori among those reaching the main draw.
On the women's side of qualifying, Czech Petra Cetkovska and Japanese veteran Kimiko Date-Krumm got through the final round but qualifying top seed Maria Jose Martinez Sanchez lost to Petra Martic.
Meanwhile, Polish 11th seed Agnieszka Radwanska has withdrawn from the tournament, citing a shoulder injury.
Read More...