This page explains how David Sakai (USATT# 9668)'s rating went from 2152 to 2139 at the Neil Smyth Memorial held on - 27 Oct 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.