This page explains how Yansong Lin (USATT# 19512)'s rating went from 440 to 749 at the Davison October Open held on - 30 Oct 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.