app\models\Tournament::isValidRank PHP Method

    public function isValidRank($user)
    {
        if (!$user) {
            return false;
        }
        $stats = $user->statistics($this->playModeStr(), true)->firstOrNew([]);
        if ($this->rank_min !== null && $this->rank_min > $stats->rank_score_index) {
            return false;
        }
        if ($this->rank_max !== null && $this->rank_max < $stats->rank_score_index) {
            return false;
        }
        return true;
    }