twoontwo

Twoontwo, commonly written as two-on-two or 2-on-2, refers to a competition format in which two players form each team and compete against another two-player team. The format is used across various sports and video games, and emphasizes close collaboration, real-time decision making, and tactical coordination. It is one of several team formats distinguished by the small team size.

In sports, two-on-two is widely used in basketball and beach volleyball. In basketball, 2-on-2 is typically played on a half court with one hoop, and scoring rules that vary by league; games are often played to 11 or 21 points. In beach volleyball and doubles tennis, teams of two compete on a smaller court, highlighting coverage, communication, and dynamic net play.

In video games and esports, two-on-two is a common competitive format, referred to as duo or 2v2 modes. Teams of two face off on maps or arenas, with coordination and role specialization playing key roles. Some titles support drafting or ban phases to balance matches, while others use simple matchmaking.

Strategy and training focus on synergy between teammates, quick callouts, and shared resource management or map control. The format is popular for casual play and for tournaments, often forming the basis for local leagues and online competitions; it also serves as a stepping stone to larger team formats such as three-on-three or five-on-five in certain games and sports.