The National Federation of State High School Associations has voted to adopt a series of rule modifications that will take effect at the start of the 2027 high school baseball season.
Among the changes is the option for schools to replace the traditional 15‑inch first base with an 18‑inch version or to use a double first base, a move designed to lower the frequency of player collisions at the base.
The South Dakota High School Baseball Association had already voted to implement the double base for the 2026 season, and the proposal was listed as one of seven recommendations from the NFHS Baseball Rules Committee.
Safety and Technology Transform the Game
In addition, the federation will permit one‑way electronic communication from a coach to either the pitcher or the catcher, allowing teams to relay pitch calls without a traditional sign‑stealing system.
USA Baseball will assume responsibility for bat testing beginning in 2028, introducing new performance standards that require non‑wood bats to meet either the USA Baseball BBCOR .50 rating or the USA Baseball Bat Performance Standard with a drop of –4, –5 or –6.
Elliot Hopkins, director of sports and liaison to the NFHS Baseball Rules Committee, said the new base dimensions and the electronic communication rule are intended to make the game safer while preserving its core character.
The organization emphasized its ongoing commitment to fostering the growth and development of high school baseball players across the country.
These adjustments reflect a broader effort to modernize high school baseball while prioritizing player safety and competitive integrity.