This page explains how David Guan (USATT# 217271)'s rating went from 1164 to 1167 at the HCTT Players Development League event from 24 Aug 2019. 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.