This page explains how Guillermo Zuluaga (USATT# 270045)'s rating went from 1178 to 1173 at the Central Carolinas Super League event from 16 Sep 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.