This page explains how Zhen Chen (USATT# 269930)'s rating went from 1419 to 1448 at the HITTA Weekly League event from 28 Oct 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.