By The Numbers: The W&S Open ATP Singles Quarterfinals

With four exciting matches on the schedule for Friday, including another Nadal-Federer clash, let's take a look at the Western & Southern Open's men's singles quarterfinals, by the numbers....


94... Weeks at No. 1 in the Emirates ATP Rankings for Novak Djokovic over the course of his career. He's No. 9 all-time in the history of the rankings.

79... Degrees, the high for Friday, according to the forecast on Weather.com. Only a 20-percent chance of rain.

77... Career titles for Roger Federer ties John McEnroe for third in the Open Era titles list.

44... Current ranking for Dmitry Tursunov, who upset No. 3 seed David Ferrer to reach the quarterfinals.

40... Aces for John Isner, the tournament's leader. Dmitry Tursunov is second-best with 30 aces.

37... Wins and 15 losses for Tomas Berdych so far in 2013. He won a career-high 61 matches in 2012.

32... Year-old Roger Federer is the oldest player in the ATP top 10 since April 17, 2006, when 35-year-old Andre Agassi was ranked No. 10.

30... Head-to-head meetings between Federer and Nadal going into Friday evening's 31st competition. Nadal leads the overall series 20-10. 

27.5... Average age of the eight W&S Open quarterfinalists.

24... Million dollars in combined prize money in 2013 from the eight remaining players.

23... Times the winner of the first set went on to win the match in Federer and Nadal's 30 matches.

20... Matches won this year for Tursunov, his highest total since winning 34 in 2008.

16... Months and 29 days since Isner defeated Djokovic, his only win in their four-match history.

12... Consecutive hard court matches won by Rafael Nadal this year. He's lost zero.

9... Head-to-head matches between Murray and Berdych. Berdych leads the series 5-4 with a win in their most recent match, in Madrid earlier this year.

8... Singles titles for Nadal this year. He has reached the final in 10 of 11 tournaments in 2013.

6... Wins apiece for Federer and Nadal in their 12-match history on hard court.

5... Western & Southern Open singles titles for Federer. He hoisted the trophy in 2005, 2007, 2009, 2010 and 2012.

4... Second place finishes for Djokovic at Cincinnati in the last five years.

2... Meetings between Del Portro and Tursunov entering Friday's match. Del Potro won the last outing in Valencia in 2011 in straight sets.

0... ATP players have completed the Career Golden Masters by winning all nine ATP World Tour Masters 1000 titles. With a win this weekend, Novak Djokovic will become the first to ever do it.