This page explains how Li Shen (USATT# 224009)'s rating went from 1218 to 1220 at the Princeton Pong Leagues event from 12 Jun 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.