This page explains how Jeffry D. D. Schultz (USATT# 78166)'s rating went from 800 to 791 at the Under 1200 Open Ratings Tournament held on - 13 Aug 2011. 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.