This page explains how Rishi Sankar (USATT# 97483)'s rating went from 1976 to 1958 at the ICC - Advanced League event from 30 Nov 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.