This page explains how Alvin Chen (USATT# 89725)'s rating went from 998 to 979 at the Westchester 2014 January Open held on - 26 Jan 2014. 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.