This page explains how Tim Gillespie (USATT# 121311)'s rating went from 1689 to 1626 at the SpinBlock Winter Open 2019 held on 26 Jan 2019 - 26 Jan 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.