This page explains how Elvis R Lopez Almonte (USATT# 79339)'s rating went from 1804 to 1771 at the Central Carolinas Super League event from 18 Nov 2011. 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.