Platform Tennis
USPTA- http://theuspta.com/
APTA- http://www.platformtennisonline.org/

Pickleball
USAPA- http://www.usapa.org/

Racquetball
USARacquetball- http://usaracquetballevents.com/

Beach Tennis
BTUSA- http://www.beachtennisusa.net/
BTA- http://www.beachtennisassociation.net/

Pop Tennis
United States POP Tennis Association- http://poptennis.com/

Padel
USPA- http://www.padelusa.org/