This page explains how Daping Zhi (USATT# 276743)'s rating went from 1371 to 1320 at the Westchester May 2023 Open held on 27 May 2023 - 28 May 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.