This page explains how Gary Osmanoff (USATT# 13305)'s rating went from 2205 to 2178 at the LYTTC Friday Pro League event from 31 Jul 2020. 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.