The Australian Open is scheduled to take place in Melbourne from January 18-31 next year
In the wake of the backlash, Australian Open organisers on Saturday introduced a five-step air quality rating to determine when play should be halted
The NextGen Finals champion beat Federer, who is 17 years his senior, 6-7 (11-13), 7-6 (7/3), 7-5, 7-6 (7/5) on Rod Laver Arena
Tiafoe is the youngest American to reach the Australian Open quarters since 20-year-old Andy Roddick who had advanced into the semi-final of the tournament back in 2003
The former world number one and three-time Grand Slam winner broke down at a press conference in Melbourne as he said the pain had become almost unbearable
Both of them were in their third major final -- their first in Australia -- and both had saved match points in earlier rounds to get there
Bopanna-Babos will now face the Candaian-Croatia pair of Gabriela Dabrwoski-Mate Pavic in the mixed doubles final
A staggering number of athletes across sports seem to have found their best game in their 30s, 40s
Sania had won her first ever Grand Slam at the Australian Open with Mahesh Bhupathi in 2009
Who wins title remains to be seen, but the arch-rivals have beaten all odds to set up this clash
Serena prevailed 6-4, 6-4 over Venus to clinch her seventh Australian Open singles crown
Williams sisters go face to face in the Australian Open finals on Saturday
Serena has been the most prolific Grand Slam winner after age 30 in tennis history
Nadal defeated Grigor Dimitrov in a classic five-set semi-final which stretched for nearly 5 hours
On Saturday, sisters Serena and Venus Williams meet in their first grand slam final in 8 years
The Williams sisters have played 27 times, including 14 times in Grand Slams
Mirza and her Croatian partner Ivan Dodig kicked off their campaign with straight sets victory
Defending champion Novak Djokovic crashed out of Australian Open by wildcard entry Uzbek Denis Istomin on Thursday in a five grinding sets match.The wild card ended Djokovic's 15-match winning streak at Melbourne Park with a 7-6(8), 5-7, 2-6, 7-6(5), 6-4 victory over almost five hours on Rod Laver Arena in Melbourne.One of the biggest upsets in Australian Open history, the match marked the first time in seven years Djokovic had even dropped a set in the first week, an even more unlikely occurrence given Istomin had never before taken a set from the world No.2 - having played five times previously, including at Australian Open 2014, for a 0-13 return.Djokovic has previously once lost to a player ranked outside of the Top 100 in the Emirates ATP Rankings over the past seven years - when he fell to No. 145-ranked Juan Martin del Potro in the opening round of the 2016 Rio Olympics.All this counted for nothing as the pair began trading blows at Rod Laver Arena. The first game alone, on ...