This page explains how Loren Williams (USATT# 76629)'s rating went from 1030 to 1027 at the San Antonio Summer Open held on - 11 Aug 2013. 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.