This page explains how Jeremiah Jeffrey (USATT# 216939)'s rating went from 1291 to 1286 at the Topspin Open League event from 17 Aug 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.