This page explains how Reid Greenspan (USATT# 18298)'s rating went from 1909 to 1885 at the AZ PTTC Monday event from 13 Feb 2017. 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.