This page explains how Xiaoming Shi (USATT# 196313)'s rating went from 1270 to 1251 at the Pong Planet Friday Night, Tuesday Night, And Saturday Leagues event from 3 Oct 2023. 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.