This page explains how Kevin Zhao (USATT# 277144)'s rating went from 439 to 440 at the New Jersey Table Tennis Club Feb. 19, 2023 Open held on 19 Feb 2023 - 19 Feb 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.