This page explains how David Contraras Guevara (USATT# 28139)'s rating went from 1525 to 1537 at the Framingham TTC December Open held on - 14 Dec 2003. 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.