This page explains how Hai Tao (USATT# 230480)'s rating went from n/a to n/a at the PTTC Saturday League event from 20 Oct 2018. 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.