This page explains how Zhiyuan Dong (USATT# 265888)'s rating went from 1887 to 1890 at the SJISC Weekly League nights event from 11 Oct 2022. 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.