This page explains how Stephen Yatvitskiy (USATT# 94739)'s rating went from 1388 to 1386 at the Westchester 2015 January Open held on - 25 Jan 2015. 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.