This page explains how Tianyi Zhou (USATT# 95031)'s rating went from 1855 to 1840 at the Central Carolinas Super League event from 11 Oct 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.