This page explains how John L. Ballard (USATT# 61485)'s rating went from 1329 to 1370 at the US Nationals held on - 19 Dec 1999. 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.