diff --git a/src/Models/Player.php b/src/Models/Player.php
index 216b56b..18e8ebd 100644
--- a/src/Models/Player.php
+++ b/src/Models/Player.php
@@ -70,7 +70,7 @@ abstract class Player
     /**
      * @return string[]
      */
-    public function getIds(): array
+    public function getIds(): ?array
     {
         return $this->Ids;
     }
@@ -88,7 +88,7 @@ abstract class Player
     /**
      * @return int[]
      */
-    public function getElos(): array
+    public function getElos(): ?array
     {
         return $this->Elos;
     }
diff --git a/src/Readers/Pairtwo6.php b/src/Readers/Pairtwo6.php
index 4f3b88d..208e017 100644
--- a/src/Readers/Pairtwo6.php
+++ b/src/Readers/Pairtwo6.php
@@ -458,8 +458,6 @@ class Pairtwo6 extends Pairtwo6Model implements ReaderInterface
             $player->setBinaryData("TieMatch", $this->readData('Int', substr($swscontents, $offset, $length)));
             $offset += $length;
 
-            $player->setElos($elos);
-            $player->setIds($ids);
             $this->getTournament()->addPlayer($player);
         }
         // PlayerNames
diff --git a/src/Tiebreaks.php b/src/Tiebreaks.php
index 1670315..424ce83 100644
--- a/src/Tiebreaks.php
+++ b/src/Tiebreaks.php
@@ -141,20 +141,22 @@ abstract class Tiebreaks extends Tournament
      * @param Player $player
      * @return float
      */
-    protected function calculateAverageRating(Player $player)
+    protected function calculateAverageRating(Player $player, int $cut = 0)
     {
         $pairings = $player->getPairings();
         $totalrating = 0;
         $totalopponents = 0;
+        $allratings = [];
         foreach ($pairings as $pairing) {
             if (array_search($pairing->getResult(), self::NotPlayed) === false) {
                 $toadd = $pairing->getOpponent()->getElos()['home'];
                 if ($toadd != 0) {
-                    $totalrating += $toadd;
-                    $totalopponents++;
+                    $allratings[] = $toadd;
                 }
             }
         }
-        return round($totalrating / $totalopponents);
+        sort($allratings);
+        $allratings = array_slice($allratings, $cut);
+        return round(array_sum($allratings) / count($allratings));
     }
 }
diff --git a/src/Tournament.php b/src/Tournament.php
index 333c36a..09e1107 100644
--- a/src/Tournament.php
+++ b/src/Tournament.php
@@ -264,7 +264,7 @@ class Tournament extends Tiebreaks
 
 
     /**
-     * @return float|bool
+     * @return float|null
      */
     private function calculateTiebreak(Tiebreak $tiebreak, Player $player, int $tbkey = 0): ?float
     {
@@ -293,6 +293,9 @@ class Tournament extends Tiebreaks
             case Tiebreak::Aro:
                 return $this->calculateAverageRating($player);
                 break;
+            case Tiebreak::AroCut:
+                return $this->calculateAverageRating($player, 1);
+                break;
             default:
                 return null;
         }