Which sports organization changed its sport the most?

Leagues, unions and one breakaway of nine players. Governing a sport and rebuilding it are not the same job.

1. 1
   ATP

   Formed in 1972, it took control of the men's calendar and ranking from the national federations.
   1000pts
2. 2
   Premier League

   Broke away from the Football League in 1992 and turned domestic football into a global television product.
   912pts
3. 3
   Original 9

   The nine players who signed $1 contracts in Houston in 1970 and started the women's professional circuit.
   912pts
4. 4
   NCAA

   Governed American college sport for a century on amateurism, then lost the argument in court.
   789pts
5. 5
   IOC

   Revived the Olympics in 1894 and built the largest recurring event in sport around them.
   789pts
6. 6
   UFC

   Took no-holds-barred fighting, wrote unified rules for it, and made it a regulated sport in a decade.
   789pts
7. 7
   IPL

   Compressed cricket into three hours in 2008 and rearranged the international calendar around it.
   684pts
8. 8
   MLBPA

   The baseball players' union that won arbitration and free agency, and reset what every athlete could earn.
   684pts
9. 9
   WTA

   Founded in 1973 by Billie Jean King and eight others, it gave women's tennis a tour of its own.
   410pts
10. 10
    Formula One

    Turned a European motor-racing series into a commercial championship raced on five continents.
    410pts
11. 11
    WADA

    Set one anti-doping code for every Olympic sport in 1999 and made testing a condition of competing.
    228pts
12. 12
    NBA

    Merged with the ABA, took the three-point line and the dunk with it, and exported the game worldwide.
    228pts