**The 2026–27 UEFA Nations League League A phase begins on 24 September 2026, with all 16 teams (France, Italy, Belgium, Türkiye, Germany, Netherlands, Serbia, Greece, Spain, Croatia, England, Czechia, Portugal, Denmark, Norway, Wales) starting at zero points across four groups of four.** A revised promotion/relegation system, approved in mid-September 2026 to transition toward a three-league format from 2028–29, means only the two lowest-ranked fourth-placed teams face direct relegation to League B. The two best third-placed sides stay in League A, while the remaining third- and fourth-placed teams enter March 2027 home-and-away play-offs against League B runners-up. Group strength varies, with traditional powers (France, Germany, Spain, Portugal, England, Netherlands, Italy) expected to dominate based on recent form and rankings, leaving sides such as Türkiye, Greece, Czechia, Wales, and Norway more exposed to bottom finishes. The league phase runs through mid-November 2026, after which quarter-finalists and relegation candidates will be clearer; traders are monitoring pre-season preparations, squad news, and early match results to assess relative group standings under the new rules.