Leading players Novak Djokovic and Serena Williams have been titled the men's and women's World Champions for 2014 by the International Tennis Federation (ITF).
The 27-year-old Djokovic won Wimbledon, the Association of Tennis Professionals (ATP) World Tour finals and finished the year ranked No.1 in the world, reports Xinhua.
The 33-year-old Williams, the oldest player ever to be named an ITF singles World Champion, won the US Open, the 18th Grand Slam title of her career, the ATP Tour Championship and was also ranked No.1 by the Women's Tennis Association.
They were named recipient of the honour Thursday.
Americans Bob and Mike Bryan were named men's doubles world champions for the 11th time in 12 years, while Sara Errani and Roberta Vinci of Italy became women's doubles world champions for the third successive year.
