This page explains how Hongxuan Zhu (USATT# 218441)'s rating went from 1986 to 1989 at the NJTTC Tuesday V League event from 17 Aug 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.