即使已经封拍，网球名宿罗杰·费德勒（Roger Federer）仍然话题十足。无论他与老对手拉斐尔·纳达尔（Rafael Nadal）和诺瓦克·德约科维奇（Novak Djokovic）之间的较量结果如何，从财务的角度来说，他都是网球历史上毋庸置疑的冠军。彭博亿万富翁指数（Bloomberg Billionaires Index）最新数据显示，罗杰·费德勒（Roger ...

LONDON, July 5 (Xinhua) -- Seven-time champion Novak Djokovic joined men's top seed Jannik Sinner to reach the fourth round at Wimbledon with a straight-sets win over Miomir Kecmanovic on Saturday.