This page explains how David J. Roddick (USATT# 70987)'s rating went from 725 to 672 at the 2022 US National TT Championships North Carolina State Qualifier held on 2 Apr 2022 - 3 Apr 2022. 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.