This page explains how James Winn (USATT# 60903)'s rating went from 2023 to 1970 at the SpinBlock Monday Night League event from 26 Aug 2019. 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.