This page explains how Ramon S. Giron (USATT# 9966)'s rating went from 1461 to 1426 at the San Diego Open held on - 19 Oct 1997. 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.