This page explains how Yuewen Zheng (USATT# 281452)'s rating went from 458 to 453 at the Spttc Saturday Junior League event from 9 Dec 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.