Roundup: Cibulkova announces retirement; Murray excited

IMAGE: Slovakia's Dominika Cibulkova. Photograph: Matteo Ciambelli/Reuters Former world number four and Australian Open runner-up Dominika Cibulkova announced her retirement on Tuesday. The......

US Open champ Osaka eases to victory on return to action in Tokyo

IMAGE: Naomi Osaka. Photograph: Al Bello/Getty Images Japan's Naomi Osaka cruised to victory in her first match since lifting the U.S. Open title, beating Dominika Cibulkova 6-2, 6-1 in the......

US Open PIX: Djokovic, Cilic Keys march into quarters

IMAGES from Day 8 of the US Open on Monday IMAGE: Serbia's Novak Djokovic returns the ball during his men's singles fourth round match against Portugal's Jaoa Sousa at the USTA Billie Jean King......

WTA Tour Finals: Perfect Kerber helps Cibulkova advance

IMAGE: Angelique Kerber of Germany celebrates a point against Madison Keys of the U.S. during their WTA World Tour match in Singapore on Thursday. Photograph: Edgar Su/Reuters Angelique Kerber......

WTA Tour Finals: Superb Kerber overwhelms Halep

IMAGE: Angelique Kerber of Germany is presented her WTA Year-end Number One Trophy on the sidelines of the round robin matches at the WTA Finals in Singapore on Tuesday. Photograph: Yong Teck......