This page explains how Elvis R Lopez Almonte (USATT# 79339)'s rating went from 1670 to 1657 at the Central Carolinas Super League event from 3 Sep 2009. 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.