This page explains how Sam Sundar (USATT# 222317)'s rating went from 1509 to 1545 at the 2018 Butterfly Labor Day Teams held on 1 Sep 2018 - 2 Sep 2018. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.