Friday 1 December 2017 11:42, UK
We take a look back at the key numbers from the world of tennis in 2017...
ONE
The number of titles Andy Murray claimed in 2017 before the British No 1 was forced to pull out of the second half of the season with a hip injury. Murray eased past Fernando Verdasco to win on the hardcourts of Dubai.
TWO
The number of players who topped the world rankings throughout 2017. Andy Murray maintained his world No 1 ranking until August 20 before Rafael Nadal took over. Meanwhile, on the WTA there were five separate world No 1s with Simona Halep eventually securing the year-end ranking.
THREE
The number of sets lost by Nadal on his way to the US Open title - his 16th Grand Slam title. The Spaniard has also now won the French Open and the US Open in the same year on three separate occasions.
FOUR
There were four separate winners in the women's game on the Grand Slam stage. Serena Williams, Jelena Ostapenko, Garbine Muguruza and Sloane Stephens claimed the four showpiece titles this year.
FIVE
The number of matches Roger Federer lost all season in 2017. David Goffin joined Juan Martin del Potro, Alexander Zverev, Tommy Haas and Evgeny Donskoy in defeating the Swiss great.
SIX
The margin of victory for Team Europe over Team World in the inaugural edition of the Laver Cup in Prague. The competition, which is akin to golf's Ryder Cup, saw Federer and Nadal play doubles together for the first time.
SEVEN
Federer won seven titles in 2017, the most he has won since capturing eight in 2007.
EIGHT
The number of first-time champions on the ATP World Tour. Hyeon Chung defeated Andrey Rublev for his first trophy at the inaugural edition of the Next Gen ATP Finals.
NINE
The number of matches Serena played in 2017, including her title triumph at the Australian Open, before the 23-time Grand Slam champion, in April, announced she was pregnant with her first child and would miss the remainder of the season. The timing confirmed she would have been roughly eight-weeks pregnant when she won the Australian Open.
10
Lucas Pouille defeated Belgium's Steve Darcis in the fifth rubber of the Davis Cup final to secure France's 10th Davis Cup title.
12
Novak Djokovic's year-end world ranking. The Serb began the year as the world No 2 but claimed only two titles - Eastbourne and Doha - before injury forced the 12-time Grand Slam champion to miss the second half of the season.
15
After reaching the semi-finals of the US Open, Juan Martin del Potro won a total of 15 matches, suffering a mere four defeats, to narrowly miss out on a spot in the eight-man field at the ATP Finals in London.
16
The number of matches Maria Sharapova has won since her return to competitive tennis from a drugs ban in Stuttgart.
17
United States ended a 17-year Fed Cup title drought with a 3-2 victory over Belarus, securing the success in the deciding doubles of the final.
20
The age of Ostapenko when she became the first unseeded player since 1933 to capture the Coupe Suzanne Lenglen and the youngest winner in Paris since Iva Majoli in 1997.
23
The number of Grand Slam finals Nadal has appeared in. Only Federer (29) has reached more major finals than the 31-year-old Spaniard.
26
Since turning 26-years-old Grigor Dimitrov has claimed his maiden Masters 1000 title in Cincinnati and finished the year by winning the season-ending ATP Finals at The O2 to become the world No 3.
35
At 35-years-old Federer became the oldest player to complete the Sunshine Double by capturing both the Indian Wells and Miami titles in the same season.
51
The year-end ranking of Denis Shapovalov. The emerging Canadian talent began the year as the world No 250 before enjoying a stellar campaign which included reaching the US Open fourth round.
107
The number of consecutive Grand Slams, Masters 1000 and ATP Finals titles won by Europeans before Jack Sock secured the Paris Masters title.
957
Stephens' world ranking in July. Six weeks later the American eased to a 6-3 6-0 victory over compatriot and close friend Madison Keys at Flushing Meadows to claim her maiden Grand Slam title in New York.
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