Novak Djokovic Defeats Roger Federer to Win U.S. Open


Sports Newsletter
An article on Monday about Novak Djokovic winning men’s singles at the United States Open misstated, in some editions, his record against Andy Murray at Wimbledon. While he has faced Murray there, he has not beaten him.
Game tree: the unstoppable Novak Djokovic
Djokovic would go on to defeat Andy Murray in the Australian Open final, and from that point on, the Serb was almost unstoppable. By the end of the 2015 season, Djokovic had won 11 titles, including three Grand Slams, and finished the year with an incredible win-loss record of 82-6.
To celebrate Djokovic’s historic season, we present his 2015 interactive Game Tree. Djokovic’s Game Tree allows you to explore his 1033 service games played in 2015.
This rare point-by-point summary shows where Djokovic’s history-breaking season was won – and rarely lost.
How the game tree works

The game tree shows how dominant (or not) Djokovic was on serve during the 2015 season. This unique visualisation gives us a better understanding of the final score, and how close Djokovic’s service games were.
Each point in the game tree is color-coded to reflect the momentum in each of Djokovic’s service games. A match that is dominated by Djokovic is highlighted with a thicker, outside flow through the ‘positive’ points of the game tree. More tightly-contested service games result in thicker lines through the ‘neutral’ and ‘negative’ points of the Game Tree.
Click on each line to reveal how many times the player won or lost that point.
Fast facts
• Djokovic played 1033 service games in 2015.
• He won 923 (89.4 per cent) of his service games.
• He won almost one-third (29.2 per cent) of his service games from 40-15.
• His most successful point is at deuce, where he wins 81.3 per cent of the time.
• His least successful point is at 15-0, where he wins 65.9 per cent of the time.
Matches to look out for
Not all of Djokovic’s service games were straight out the textbook as his results might suggest. Yes, he was brutally dominant at times against players like Marcos Baghdatis at the BNP Paribas Masters, where Baghdatis failed to put any pressure whatsoever on Novak’s serve (see below).
We saw many more tightly-contested service games in his match against Tomas Berdych at Monte Carlo. The game tree shows that Berdych had some serious opportunities, having Novak 0-30 six times throughout the match. Unfortunately, Djokovic was able to wrestle back the momentum from half of these points and went on to win the match 7-5 4-6 6-3.
Andy Murray, one of the few players beat Djokovic in 2015, did so at the Coupe Rogers in Toronto. Murray piled on the pressure and pushed Novak to deuce six times throughout the match. Murray won half of these and would break one other time at 30-40. That would be enough for a rare victory for Murray.

Summary
Djokovic’s 2015 season was no doubt one for the ages, but he didn’t always have it his own way as the results might suggest. The final score of course is only a small part of a much larger and more complex story, and the game tree enables us to better understand that score. Here we have explored just a few interesting examples of patterns and trends that we may have not have seen using conventional tennis reporting methods.
I encourage you to use the game tree to take a deeper dive into some of Novak’s classic matches last year and to see what might have been for some of his closest rivals, as they begin their assault to dethrone the undisputed 2015 king of men’s tennis.
Notes
Walkovers not included.
The Djokovic v Nishikori match at World Tour Finals is not included due to incomplete data.
Damien Saunder is a performance analyst who supports elite tennis players and coaches in the area of data visualisation and analytics.
Novak Djokovic Serbian tennis player
Novak Djokovic, (born May 22, 1987, Belgrade, Yugoslavia [now in Serbia]), Serbian tennis player who was one of the game’s premier performers in the early 21st century, when he won 11 Grand Slam titles.
Djokovic
took up tennis at age four and quickly ascended the junior ranks.
Despite the hardships that came with growing up in the war-torn Serbia of the 1990s, he became Europe’s
top-ranked 14-and-under player and later the number one 16-and-under
player on the continent before turning professional in 2003. Djokovic
entered the top 100 of the Association of Tennis Professionals (ATP) at
age 18, and in July 2006 he won his first ATP event. After advancing to
the semifinals at both the 2007 French Open and Wimbledon, he reached the finals of that year’s U.S. Open but lost in straight sets to Roger Federer. Djokovic’s hot play continued into 2008 as he won the first Grand Slam tournament of the year, the Australian Open, becoming the first Serbian man to win one of tennis’s four most prestigious singles championships.
Djokovic’s progress plateaued for almost three years, as he won just 10 ATP men’s singles tournaments
and reached only one Grand Slam final (the 2010 U.S. Open) between
February 2008 and the end of 2010. His fortunes turned in December 2010
when he led the Serbian Davis Cup team to the country’s first Davis Cup
title. His Davis Cup victories marked the beginning of a 43-match
winning steak—the third longest such streak in the Open era (since
1968)—which included a second Australian Open
title in January 2011. Djokovic’s remarkable streak ended with a French
Open semifinal loss to Federer, but his strong play helped him rise to
the number one world ranking shortly after he defeated Rafael Nadal
to capture the 2011 Wimbledon championship. Djokovic later defeated
Nadal in the U.S. Open final to claim his third Grand Slam title of the
year.
At the Australian Open in 2012, he again bested Nadal,
winning a five-set thriller that lasted nearly six hours. The two met
for the fourth consecutive Grand Slam final at the 2012 French Open,
where Djokovic lost to Nadal in four sets. In 2013 Djokovic defeated Andy Murray
to win his fourth Australian Open title, and he captured another
Wimbledon championship the following year when he beat Federer in a
dramatic five-set final. He again beat Murray to capture his fifth
career Australian Open in 2015, which made Djokovic the all-time leader
in Australian Open men’s singles championships during the Open era.
After a loss in the 2015 French Open final, the top-ranked Djokovic
bested Federer to win his third Wimbledon championship. He continued his
hot play at the U.S. Open, beating Federer in the final to capture his
10th career Grand Slam title. Djokovic ran his winning streak in Grand
Slam matches to 21 when he beat Murray in straight sets in the final of
the 2016 Australian Open.



