This page explains how Grant Zou (USATT# 271539)'s rating went from 1992 to 1947 at the 2023 U.S. NATIONAL TABLE TENNIS CHAMPIONSHIPS held on 3 Jul 2023 - 7 Jul 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.