This page explains how Gilbert B. Baguinon (USATT# 80536)'s rating went from 1691 to 1657 at the DatangTT.net Spring Open held on - 12 Mar 2011. 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.