An International e-Sports team which is headquartered in the United Kingdom competes  in what developed and published by Riot Games for Microsoft Windows and macOS?
League of Legends League of Legends (abbreviated LoL) is a multiplayer online battle arena video game developed and published by Riot Games for Microsoft Windows and macOS. The game follows a freemium model and is supported by microtransactions, and was inspired by the "" mod, "Defense of the Ancients".
Overwatch League The Overwatch League is a professional eSports league for the video game "Overwatch". During Blizzcon 2016, Blizzard announced their plans for the league, using an organization of permanent teams in league placements similar to more traditional physical sports in the United States, rather than the use of relegation and promotion used in a series like "League of Legends" Championship Series.