Novak Djokovic becomes Men’s World Champion for the fourth time after reclaiming the No. 1 ranking in 2014. The 27-year-old won his seventh Grand Slam title at Wimbledon, and was also a finalist at Roland Garros and semifinalist at the US Open. He won a total of seven titles during the year including the season-ending ATP World Tour Finals. Djokovic is one of only four men to be named World Champion four or more times, alongside Ivan Lendl, Pete Sampras and Roger Federer.

Serena Williams is named Women’s World Champion for the fifth occasion, after maintaining the No. 1 ranking throughout the year. The 33-year-old captured her 18th Grand Slam title at the US Open to equal the achievements of Martina Navratilova and Chris Evert. She won six other titles during the year, including the season-ending WTA Finals. Williams is the oldest player ever to be named an ITF Singles World Champion.

Williams said: “I’m so honored to be named ITF World Champion for the fifth time. This was a year of challenges and triumphs, so to win another Grand Slam and retain my year-end No. 1 ranking is an accomplishment I’m very proud of. I’m grateful to have the support of the tennis community in every way possible. I can’t wait for 2015.”

Bob and Mike Bryan become Men’s Doubles World Champions for the 11th time after capturing their 16th Grand Slam title and 100th title overall at the 2014 US Open. They won a total of ten titles during the year, including the ATP World Tour Finals, taking their total career titles to 103. They were also runners-up at Wimbledon. The brothers now stand within two trophies of the record of wheelchair tennis star Esther Vergeer, who was named World Champion 13 times.

Mike Bryan said: “The 2014 season was one of our best seasons on tour and it’s one we’ll fondly remember for a lot of reasons. We look forward to the awards dinner in Paris and sharing the stage with all the other world champions.”

Sara Errani and Roberta Vinci are only the second pair to be named Women’s Doubles World Champions on three occasions. The Italians completed the career Grand Slam with their first victory at Wimbledon, and were also champions at the Australian Open and runners-up at Roland Garros. They won a total of five titles during the year and finished 2014 co-ranked No. 1 on the WTA doubles rankings.

Errani and Vinci said: “We are both really happy to be Women’s Doubles World Champions for the third consecutive year. It is a great pleasure and honour to have finished this year as number one in the doubles ranking again. Our goal for 2015 is to defend our Australian Open and Wimbledon titles.”

ITF President Francesco Ricci Bitti said: “All of our World Champions have demonstrated great consistency at the top of the game in one of the strongest eras for our sport. Serena Williams is one of the toughest competitors of all-time, while Novak Djokovic’s performances at the biggest events make him a deserving winner. Bob and Mike Bryan’s remarkable achievement is a testament to their continued drive and determination, while Sara Errani and Roberta Vinci have shown the importance of teamwork both on and off court.”

Catherine “CiCi” Bellis is the second American in three years to become ITF Girls World Champion, and is the youngest world champion since 2006. The 15-year-old won four singles title during the year, sealing the year-end No. 1 ranking at last week’s Orange Bowl. She also led the United States to victory in the Junior Fed Cup by BNP Paribas, one year after being a member of the USA’s 14-and-under ITF World Junior Tennis winning team.

Bellis said: “It was my goal to be the year-end No. 1 from when I started playing in the juniors two years ago and I am ecstatic that I was able to reach this milestone as a 15-year-old. It is an honour to be in such great company with all of the amazing and legendary juniors before me.”

Andrey Rublev is the first Russian male in any category to be named ITF World Champion after achieving the year-end No. 1 boys’ junior ranking. The 17-year-old was the most consistent performer on the ITF Junior Circuit, winning his first Grand Slam title at Roland Garros, and capturing singles bronze and doubles silver at the Youth Olympic Games in Nanjing. He reached a total of five singles finals during the year, winning two titles.

Rublev said: “I am happy to finish this year as World Champion. I thank my family, coaches and team for all the support I was getting all the time. I also understand that this is just the first step and will do my best to score further victories.”