This page explains how Ryousuke Adachi (USATT# 33546)'s rating went from 1697 to 1667 at the Meiklejohn North American Seniors Open held on - 3 Jun 2012. 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.