Serena Williams, Caroline Wozniacki, Novak Djokovic and other stars for bushfire fundraiser

*Melbourne:* Tennis superstars Roger Federer and Rafael Nadal jointly donated Aus$250,000 (US$172,000) for Australian bushfire relief at a charity fundraiser in smoggy Melbourne on Wednesday. The two tennis legends, with 39 Grand Slam singles titles between them, were at the Rod Laver Arena in a bid to swell the vast sums already...