This page explains how Aaditya Sahu (USATT# 217264)'s rating went from 990 to 989 at the Roslyn-Long Island Sports Center (LISC) League event from 6 Apr 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.