The MSSL is the premier Men's Open Age Competitive Soccer League in Massachusetts. The League is affiliated with Massachusetts State Soccer Association (MASS), Massachusetts Youth Soccer Association (MYSA), the United States Adult Soccer Association (USASA) and the United States Soccer Federation (USSF). The League is incorporated as a non-profit organization for the purpose of developing, promoting and administering the game of soccer among players of all ages in Massachusetts.

The MSSL is comprised of 3 divisions. The MSSL Men's Open Division, the MSSL International Premier Division (IPD), and the MSSL Youth Division. The MSSL Men's Open Division primarily serves the 18-30 year old elite athletes, with some exceptions. The MSSL International Premier Division serves the Over 30, 0ver 40, and Over 50 year old premier athletes. The MSSL Youth Division serves the youth player between the ages of 8-17. The League is based in the Greater Boston Area but includes teams within the Rt. 495 belt as well as some new teams from the State of Rhode Island.