This page explains how Hiro Moriyasu (USATT# 30048)'s rating went from 1855 to 1856 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.