This page explains how Chui-Chu Lok (USATT# 91890)'s rating went from 1218 to 1233 at the Long Beach Table Tennis League event from 18 Sep 2019. 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.