This page explains how Changlin Ma (USATT# 218797)'s rating went from 1645 to 1660 at the BAPPA Advanced League event from 15 Oct 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.