This page explains how David Feerst (USATT# 77511)'s rating went from 1665 to 1649 at the Experior Club League event from 2 Nov 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.