This page explains how Kas Sivaguru (USATT# 230109)'s rating went from 1866 to 1832 at the Boston TTC event from 28 Jan 2020. 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.