This page explains how Tianyi Zhou (USATT# 95031)'s rating went from 1138 to 1015 at the Central Carolinas Super League event from 13 Apr 2017. 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.