1 Etymology
2 Origin
2.1 Real tennis
3 Birth of lawn tennis
4 Terminology
5 Tournaments and tours
5.1 The Four Majors
5.1.1 1877: Wimbledon
5.1.2 1881: U.S. Open
5.1.3 1891/1925: French Open
5.1.4 1905: Australian Open
5.2 The Davis Cup
5.3 International Tennis Federation
5.4 The Fed Cup
5.5 Pro tournaments
5.6 Pro tours
5.7 Pro Championships (Pro Slams)
6 Open Era
6.1 National Tennis League (NTL) and World Championship Tennis (WCT)
6.2 Grand Prix circuit
6.3 Tour rivalries and the creation of the Association of Tennis Professionals (ATP)
6.4 Integration
6.5 ATP Tour
6.6 Women's professional tennis
7 Hall of Fame
8 See also
9 Notes
10 References