This page explains how Elvis R Lopez Almonte (USATT# 79339)'s rating went from 1851 to 1804 at the Central Carolinas Super League event from 11 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.