This page explains how John W. Ebert (USATT# 5538)'s rating went from 850 to 750 at the BCC April Open held on - 3 Apr 1999. 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.