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Baseball
MLB
Baseball is a bat-and-ball sport played between two teams of nine players each. The sport is governed at the professional level in the United States and Canada by Major League Baseball (MLB), whose Official Baseball Rules (OBR) constitute the authoritative ruleset for professional play. The editi...
Baseball
NCAA
NCAA baseball is the collegiate form of baseball, played by member institutions of the National Collegiate Athletic Association across Divisions I, II, and III. Competition is conducted under the NCAA Baseball Rules of the Game, published as a rules book on a two-year cycle (the current edition b...
Baseball
WBSC
Baseball is a bat-and-ball team sport played between two teams of nine players who take turns batting and fielding. The sport is governed internationally by the World Baseball Softball Confederation (WBSC), the IOC-recognized international federation for baseball and softball. This rulebook is ba...
Softball
WBSC
Softball is played and governed internationally by the World Baseball Softball Confederation (WBSC). The sport's current playing rules are set out in the Official Rules of Softball – Fast Pitch, 2026-2029 edition, released by the WBSC in December 2025 and effective from January 1, 2026 for all in...
Kickball
Kickball is a team sport that combines elements of baseball and soccer. Instead of hitting a pitched ball with a bat, players kick a large rubber ball that is rolled along the ground by a pitcher. The game follows the basic structure of baseball — teams alternate between kicking (offense) and fie...
Matching Rule Topics(10)
The Ball
NCAA
A standard baseball with a cushioned cork center, yarn windings, and a leather cover with raised stitching, built to the NCAA's specified weight, circumference, and performance standards.; Only balls bearing the required NCAA certification marking may be used in competition.
5.1 Game Structure
WCF
A standard game consists of 10 ends (8 ends in Mixed Doubles, per R17(c)). Each end is analogous to an inning in baseball: both teams deliver all their stones, and then the end is scored.
Section 5: Rules of Play
WCF
A standard game consists of 10 ends (8 ends in Mixed Doubles, per R17(c)). Each end is analogous to an inning in baseball: both teams deliver all their stones, and then the end is scored.