This page explains how Neil B. Ackerman (USATT# 3749)'s rating went from 1766 to 1720 at the 2011 MVTTC Thanksgiving Open held on - 19 Nov 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.