diff --git a/app/models/stage.rb b/app/models/stage.rb
index b43d80c..5e1d9d0 100644
--- a/app/models/stage.rb
+++ b/app/models/stage.rb
@@ -4,4 +4,8 @@ class Stage < ApplicationRecord
   belongs_to :tournament
   has_many :matches, dependent: :destroy
   has_many :groups, dependent: :destroy
+
+  def teams
+    groups.map{|g| g.matches.map{ |m| m.match_scores.map{ |ms| ms.team}}}.flatten.uniq
+  end
 end