This page explains how William Allen Blyth (USATT# 12161)'s rating went from 1372 to 1368 at the North-West LA Tournament held on - 17 Feb 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.