This page explains how Jun Gao (USATT# 777)'s rating went from 2616 to 2619 at the Potomac Spring Open held on - 17 May 1998. 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.