This page explains how Xinran Zhao (USATT# 278725)'s rating went from 1178 to 1078 at the 2023 June Open @ Princeton Pong held on 3 Jun 2023 - 4 Jun 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.