This page explains how Alex Cai (USATT# 1172586)'s rating went from n/a to 400 at the LYTTC Giant RR - September 2021 held on 18 Sep 2021 - 19 Sep 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.