This page explains how Marc Villanueva (USATT# 28463)'s rating went from 1281 to 1278 at the Rockford Spring Open 2005 held on - 16 Apr 2005. 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.