This page explains how Arun Selvaraj (USATT# 215418)'s rating went from 2045 to 2025 at the Boston TTC event from 17 Sep 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.