This page explains how Qing Chai (USATT# 196751)'s rating went from 1777 to 1772 at the 888 League event from 14 May 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.