Америка никогда не существовала

There is no such thing as american scoring. The only american thing in tournament chess is the american pairing system wihich uses some variables to calculate your opponent. One of these was called americanpoints in the original sources of pairtwo. This one was unfortunatly mistaken to really contain an american scoring

src/Enums/Tiebreak.php

@@ -29,7 +29,6 @@ class Tiebreak extends Enum
     const None = "";
     const Keizer = "Keizer";
     const Points = "Points";
-    const American = "American";
     const Buchholz = "Buchholz";
     const BuchholzMed = "Buchholz Median";
     const BuchholzCut = "Buchholz Cut";

src/Readers/Pairtwo6.php

@@ -887,11 +887,10 @@ class Pairtwo6 implements ReaderInterface
                 $firstElement = new Tiebreak(Tiebreak::Keizer);
                 break;
             case TournamentSystem::American:
-                $firstElement = new Tiebreak(Tiebreak::American);
-                break;
             case TournamentSystem::Closed:
             case TournamentSystem::Swiss:
                 $firstElement = new Tiebreak(Tiebreak::Points);
+                break;
         }
         $tiebreaks = $this->getTournament()->getTiebreaks();
         array_unshift($tiebreaks, $firstElement);

src/Readers/Swar4.php

@@ -631,8 +631,6 @@ class Swar4 implements ReaderInterface
     {
         switch ($this->getTournament()->getSystem()) {
             case TournamentSystem::American:
-                $firstElement = new Tiebreak(Tiebreak::American);
-                break;
             case TournamentSystem::Closed:
             case TournamentSystem::Swiss:
             default:

src/Tournament.php

@@ -421,9 +421,6 @@ class Tournament
             case Tiebreak::Keizer:
                 return $this->calculateKeizer($player);
                 break;
-            case Tiebreak::American:
-                return $this->calculateAmerican($player);
-                break;
             case Tiebreak::Points:
                 return $this->calculatePoints($player);
                 break;
@@ -528,19 +525,6 @@ class Tournament
         return $player->getBinaryData('ScoreAmerican');
     }
 
-
-    /**
-     * Points following american system
-     *
-     * @param Player $player
-     * @return float | null
-     */
-    private function calculateAmerican(Player $player): ?float
-    {
-        return $player->getBinaryData('ScoreAmerican');
-    }
-
-
     /**
      * Number of points
      *