This page explains how Zongqi Henry Zhong (USATT# 84897)'s rating went from 2454 to 2455 at the NJTTC Friday League event from 21 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.