With so many tournaments scheduled on the ATP and WTA tennis calendars, there are plenty of opportunities for tennis stars to earn the trophies they need to prove that they are among the world's best. Another indicator that proves talent is prize money, as not only does a player's earning potential increase as they progress further into tournaments, but it is also affected by the number of tournaments they enter into.
This means that those who earn the most need to perform the best as well as have the highest levels of involvement in the sport. Let's take a look at some of 2018s brightest tennis stars who have been raking in the cash on a regular basis (all prize money figures correct as of November 2018).
10. Angelique Kerber
This has been a massive year for the German starlet, who won 2 WTA singles titles. This includes winning the coveted Wimbledon grand slam, where she defeated Serena Williams 6-3 6-3 in the final and only dropped one set during her entire tournament. Other notable displays include a semi-final showing at the Australian Open and a quarterfinal appearance at Roland Garros.
Kerber's phenomenal performances this year earned her the number two spot in the WTA singles rankings, which is a 19 spot leap from 21 at the end of 2017. She earned a total of $5,686,362 this year, which puts her in 5th place on the WTA highest earners list.
9. Juan Martin Del Potro
The 30-year-old Argentine showed no signs of decline due to aging, as he achieved a career-high ATP singles ranking of 3 on 13 August 2018. This achievement came courtesy of an Indian Wells ATP World Masters victory along with a tournament win in Acapulco, Mexico.
Del Potro also had a strong showing in the US Open in August, where he defeated Rafael Nadal in an effort to make it to the final, only to lose out on silverware to tennis icon Novak Djokovic. In what was possibly his best year of tennis yet, Del Potro has earned $5,958,251 in prize money in 2018 to date.
8. Elina Svitolina
Whilst the Ukrainian did not feature much in any of this year's grand slams, she more than compensated for it by putting in a heroic performance to win this year's WTA Finals in Singapore, defeating the likes of Sloane Stevens, Caroline Wozniacki, and Petra Kvitova.
This remarkable feat, along with three other tournament wins, saw Svitolina attain 4th place in the WTA Singles Rankings. She also earned $5,737,247 in prize money in 2018 to date, putting her as the 4th highest earner this year in the WTA.
7. Roger Federer
One of the greatest tennis players of all time, the Swiss Maestro certainly proved that he still has what it takes to play at the top level, even at the age of 37.
Fed won an impressive four titles this year, including the Australian Open grand slam, where he did not drop a single set until the final, in which he defeated Marin Cilic in a 5 set thriller. Also included in his collection of trophies for 2018 are ATP titles from Basel, Stuttgart, and Rotterdam.
6. Naomi Osaka
This has been a massive year for the Japanese youngster. Ranked only 68th in the WTA Singles Rankings last year, she is now in the number 3 spot. This is due to her winning the US Open, where she defeated both Serena Williams and Madison Keyes in straight sets. She also won the BNP Paribas Open at Indian Wells, and appeared in the WTA Finals in Singapore.
This will be a year of tennis that the 21-year-old will never forget, especially with her taking home a total of $6,394,289 in prize money thus far in 2018.
5. Rafael Nadal
It's been another busy and successful year for Nadal, with 5 tournament wins and a number 2 spot on the ATP Single Rankings, after making it to number one several times this year.
Included in his title wins this year is Roland Garros, the French grand slam, along with three ATP World Tour Masters 1000 tournaments and the Barcelona Open. Such feats have resulted in a lump sum of $8,663,347 in prize money so far in 2018, with the King of Clay looking likely to challenge again for the number one spot on the rankings come the new year.
4. Caroline Wozniacki
In one of her most successful years on the tennis circuit, the former WTA number 1 won 3 WTA titles, including the Australian Open, which is her first ever grand slam success. Her victory in the China Open later in the year marked her 30th career title.
The Dane is currently ranked number 3 in the WTA singles rankings, however with prize money totalling $6,657,719, she is currently in second place in the race for the most prize money in the WTA for 2018.
3. Alexander Zverev
This has been a breakthrough year for the German rising star. While a Grand Slam title still eludes the 21-year-old, Zverev won the ATP World Finals in London, defeating both Roger Federer and Novak Djokovic in the process. He won a respectable 4 tournaments this year, including the ATP Masters 1000 in Madrid, which helped him to cement 4th place in the ATP Singles Rankings.
Zverev is placed second on the list of the highest prize money earners in the ATP this year to date, with prize money of $8,706,298.
2. Simona Halep
The current WTA world number 1 had a highly eventful year. She won Roland Garros in a sensational fashion, defeating Sloane Stevens, Garbine Muguruza, and Angelique Kerber en route to victory. She also appeared in the final of the Australian Open, narrowly losing to Caroline Wozniacki.
The Romanian's three title wins in 2018 saw her retain the number one spot in the WTA rankings that she earned in 2017, and also resulted in her bringing home the most prize money in the WTA in 2018 so far, with an amount of $7,409,564.
1. Novak Djokovic
The Serb proved why he is the number one ATP tennis player in the world this year, as he took home a total of four major ATP trophies. Two of his trophies were coveted grand slams, namely Wimbledon and the US Open. His other two triumphs were ATP World Tour Masters 1000 trophies from Shanghai and Cincinnati.
Djokovic was the clear winner when it came to earning the most prize money in the ATP for the year, taking home a juicy lump sum of $15,967,184; this amount is almost double that of second-placed Zverev. If one thing is certain, it is that robbing Djokovic of the number one spot in the coming year will be a near-impossible feat which would provide fans with some of the most entertaining tennis seen in the modern era of the sport.