This page explains how Karl Eisenkoelbl (USATT# 94837)'s rating went from 1854 to 1828 at the HITTA Weekly League event from 27 Aug 2021. 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.