This page explains how Zhigao Si (USATT# 231275)'s rating went from 2517 to 2566 at the 2019 Joola LA Open held on 31 Aug 2019 - 1 Sep 2019. 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.