This page explains how Brad Teng (USATT# 220690)'s rating went from 1569 to 1554 at the Spttc Saturday Night League event from 19 Feb 2022. 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.