This page explains how Harry Tan (USATT# 271147)'s rating went from 67 to 80 at the 2022 US National TT Championships California State Qualifier held on 25 Mar 2022 - 27 Mar 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.