This page explains how Qing Chai (USATT# 196751)'s rating went from 1809 to 1957 at the Austin Table Tennis League event from 27 Sep 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.