Claim: John McEnroe was a tennis player.

The International Tennis Federation -LRB- ITF -RRB- is the governing body of world tennis , wheelchair tennis , and beach tennis . It was founded in 1913 as the International Lawn Tennis Federation by twelve national associations , and as of 2016 , is affiliated with 211 national tennis associations and six regional associations .   The ITF 's governance responsibilities include maintaining and enforcing the rules of tennis , regulating international team competitions , promoting the game , and preserving the sport 's integrity via anti-doping and anti-corruption programs . The ITF partners with the Women 's Tennis Association -LRB- WTA -RRB- and the Association of Tennis Professionals -LRB- ATP -RRB- to govern professional tennis .   The ITF organizes annual team competitions for men -LRB- Davis Cup -RRB- , women -LRB- Fed Cup -RRB- , and mixed teams -LRB- Hopman Cup -RRB- , as well as tennis and wheelchair tennis events at the Summer Olympic and Paralympic Games on behalf of the International Olympic Committee . The ITF sanctions the Grand Slam tennis tournaments as well as circuits which span age ranges -LRB- junior , professional men and women , and seniors -RRB- as well as disciplines -LRB- wheelchair tennis ; beach tennis -RRB- . In addition to these circuits , the ITF also maintains rankings for juniors , seniors , wheelchair and beach tennis .