This page explains how Muzaffar Halkuziev (USATT# 229599)'s rating went from 1200 to 1116 at the Swan Sunday League event from 9 Sep 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.