This page explains how Xiang Ma (USATT# 212864)'s rating went from 1901 to 1881 at the San Francisco Bay Area CLC event from 9 Mar 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.