This page explains how Angelica Arellano (USATT# 92195)'s rating went from 557 to 555 at the LATTA Open held on - 22 Feb 2014. 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.