This page explains how Chettra Ly (USATT# 1688)'s rating went from 1846 to 1841 at the Spttc Wednesday night league event from 29 Jan 2020. 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.