This page explains how Nimish Jain (USATT# 222485)'s rating went from 680 to 580 at the PTTC Saturday League event from 21 Sep 2019. 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.