This page explains how Gautam Anand (USATT# 84319)'s rating went from 1997 to 1983 at the Swan Sunday League event from 16 Jun 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.