This page explains how Dmitry Ryvkin (USATT# 29479)'s rating went from 1929 to 1929 at the Pensacola's 13th Annual Summer Open held on - 20 Jul 2013. 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.