This page explains how Zhen Jia (USATT# 83670)'s rating went from 2121 to 2119 at the Central Carolinas Super League event from 22 Oct 2015. 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.