This page explains how Vivaan Chandra (USATT# 1170374)'s rating went from 893 to 683 at the Spartans Butterfly Open held on 11 Jun 2021 - 13 Jun 2021. 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.