This page explains how Zongyuan Yuan (USATT# 223056)'s rating went from 1250 to 1245 at the 2018 Milcreek Open held on 21 Oct 2018 - 21 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.