This page explains how Arkadiy Ravin (USATT# 28869)'s rating went from 1234 to 1213 at the Rochester Open 2015 held on - 1 Mar 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.