Rules

Major changes in substitution procedures in high school boys lacrosse will take effect with the 2014 season. Along with clarifying definition of illegal blindside hits, 19 rules changes were approved by the National Federation of State High School Associations (NFHS) Boys Lacrosse Rules Committee at its July 16-18 meeting in Indianapolis.

Lacrosse may be the fastest-growing high school boy's sport in the United States, but only football and ice hockey have higher concussion rates. A 2013 study pinpoints the possible culprit: widespread and intentional use of helmets during player-to-player contact, often to defenseless players, and usually without a penalty being called.

A run-down on rule changes, clarifications and points of emphasis made by the National Federation of State High School Associations (NFHS) Boys Lacrosse Rules Committee for the 2010 season.

Rule changes for the 2009 season enacted by the National Federation of State High School Associations (NFHS).

Beginning next season, boys lacrosse players must wear gloves that cover the palms. Gloves that have the palms cut out or were manufactured without palms will not be legal.