This page explains how Yuewen Zheng (USATT# 281452)'s rating went from 453 to 449 at the Spttc Saturday Junior League event from 6 Jan 2024. 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.