This page explains how Xiangfei Zeng (USATT# 219486)'s rating went from 1872 to 1948 at the JOOLA Global Championships held on 1 Sep 2022 - 4 Sep 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.