Internationally tennis Federation
internationally the tennis Federation (IETF) is the tennis world union, national tennis would connect 196 for which belongs.
The IETF was created 1913 in Paris as ILTF (international Lawn tennis Federation). Since the meaning of the grass cover constantly decreased/went back with the tennis, 1977 became, and US open of lawns at hard place changed, „Lawn over “(for lawns) from the name painted the word.
The tennis world union (IETF) organizes the Grand of Slam tournaments (Australian open, French open, Wimbledon and US open). In addition those is IETF organizer of the Davis Cup as well as Fed Cup and the tennis competitions with the olympic plays. The tennis tournaments are aligned with the gentlemen of the ATP and with the ladies of the WTA. An exception is the tennis of Masters Cup, which is organized since 2000 of the ATP and IETF.