This page explains how Robert (Bo) Bloesinger (USATT# 74860)'s rating went from 654 to 670 at the 2009 Under 1200 held on - 15 Aug 2009. 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.