This page explains how Tyson Y.H. McCoy (USATT# 90379)'s rating went from 1717 to 1694 at the 2021 US National TT Championships Florida State Qualifier held on 19 Mar 2021 - 21 Mar 2021. 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.