This page explains how Dmitriy Zhitomirskiy (USATT# 90656)'s rating went from 1271 to 1358 at the Westchester 2015 September Open held on - 27 Sep 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.