This page explains how Joseph Michael Windham (USATT# 90769)'s rating went from n/a to 1987 at the Pre-NATT Rating - No Match History 2 held on - 25 Jun 2015. 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.