Roddick to retire, Federer and Serena play on

NEW YORK (Reuters) – Andy Roddick stunned the tennis world by announcing that the U.S. Open would be his last tournament on Thursday but there was no sign of the end of the road for his contemporaries Roger Federer and Serena Williams on day four at Flushing Meadows.

China’s Chen ditches retirement plans

(Reuters) – China’s Olympic champion Chen Yibing has made an abrupt U-turn on his decision to retire from gymnastics after a surprise defeat in the men’s rings competition earlier this month.

Kerber survives battle with Venus at U.S. Open

NEW YORK (Reuters) – Germany’s sixth seed Angelique Kerber survived a tense battle against Venus Williams 6-2 5-7 7-5 on Thursday night in the second round of the U.S. Open.

Hamilton to repeat Armstrong doping claims in book

(Reuters) – Less than two weeks after Lance Armstrong was handed a lifetime ban by the United States Anti-Doping Agency (USADA), fellow American cyclist Tyler Hamilton will describe their alleged drug cheating together in a book.