This page explains how Daniel Zevallos (USATT# 1168991)'s rating went from 627 to 666 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.