This page explains how Purvi Soni (USATT# 98261)'s rating went from 1127 to 1121 at the ICC - Advanced League event from 16 Sep 2017. 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.