This page explains how Tung D. D. Phan (USATT# 9070)'s rating went from 2199 to 2198 at the Pacific Coast held on - 1 Oct 1995. 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.