This page explains how Andrea Tang (USATT# 202987)'s rating went from 1368 to 1354 at the Boston TTC Div.B event from 31 Dec 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.