US Quadball | 617 followers on LinkedIn. The national governing body for the sport of quadball in the United States. | Established in 2010, US Quadball is the national governing body for the sport of quadball, a fast-paced, mixed-gender contact sport with a unique mix of elements from rugby, dodgeball, and flag football. USQ’s mission is to advance the sport by organizing events and programs that build community and empower adult and youth athletes of all identities, including all races and genders, to compete together. Our season runs from September to April and ends with the largest quadball event in the world: US Quadball Cup!