Novak Djokovic of Serbia stands behind the trophy after Roger Federer of Switzerland forfeited due to injury in the men's singles final at the ATP World Tour Finals at the O2 in London, November 16, 2014. REUTERS/Suzanne Plunkett
Novak Djokovic of Serbia stands behind the trophy after Roger Federer of Switzerland forfeited due to injury in the men's singles final at the ATP World Tour Finals at the O2 in London, November 16, 2014. Reuters

Forbes announced their fourth annual 30 Under 30 list, across a range of fields including sports, entertainment, art and style, science, media, marketing and advertising, consumer tech, venture capital, finance, music, manufacturing and industry, and retail and commerce. Among the sport personalities on Forbes' 30 Under 30 Sports list are World No. 1 tennis athlete Novak Djokovic, footballers Neymar and Cristiano Ronaldo, and Ultimate Fighting Championship (UFC) light heavyweight champion Jon Jones.

Novak Djokovic

The 27-year-old Serbian tennis athlete wasn't part of last year's 30 under 30 list, which featured tennis stars Maria Sharapova, Andy Murray, Kei Nishikori, and Caroline Wozniacki. In the 2015 Forbes' 30 Under 30 Sports list, Djokovic is the only tennis player who made it in the list. Djokovic ended his 2014 season as World No. 1, beating his rivals Roger Federer (World No. 2) and Rafael Nadal (World No. 3.) Djokovic is a seven-time Grand Slam champion, including four Australian Open titles (2008, 2011-2013).

Djokovic kicked off his 2015 season at the exhibition tournament Mubadala World Tennis Championships in Abu Dhabi, where he made it in the finals but forced to withdraw due to an illness. Djokovic then competed in the Qatar ExxonMobil Open in Doha, but lost to Ivo Karlovic in straight sets, 6-7 (2-7) 7-6 (8-6) 6-4, in the quarterfinals.

Jon Jones

UFC light heavyweight champion Jon Jones is also singled out by Forbes in this year's 30 Under 30 list. Jones successfully defended his title win a unanimous victory over Daniel Cormier at UFC 182 on Jan. 6, 2015. This victory also marks Jones' 12th winning streak in the octagon ring. Prior his successful title defense, Jones tested positive for traces of benzoylecgonine, which is a metabolite of cocaine. He is currently in a rehab treatment facility.

Neymar

Brazilian poster boy Neymar is also included in the list. "Few athletes have shouldered greater expectations than Neymar, who is already Brazil's national team captain and the No. 16 highest-paid in the world, netting $33.6 million last year," Forbes wrote.

In Barcelona's latest match, Neymar has scored two out of five goals to defeat La Liga minnows Elche during the Copa del Rey clash at Camp Nou on Jan. 8. Barcelona will take on Atletico Madrid next on Jan. 11.

Cristiano Ronaldo

Joining Neymar in the list is Real Madrid star Cristiano Ronaldo, who is the second highest-paid behind Floyd Mayweather Jr. in Forbes' highest-paid athlete list in 2014. Ronaldo is hailed as one of the greatest footballers of all time. He is the first Portuguese footballer to score 50 international goals. Some of the awards he had received include the prestigious FIFA Ballon d'Or, FIFA World Player Of The Year, and the European Golden Shoe awards. The just-announced Forbes' 30 Under 30 List features a remarkable medley of young and ambitious men and women across different fields, all under the age of 30. For the complete list, visit Forbes.

To reach the author of this article, email r.corpuz@IBTimes.com.au.

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