This page explains how Nathan Lee (USATT# 92628)'s rating went from 1987 to 1978 at the Swan Friday O2000 Team League event from 9 Sep 2016. 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.