This page explains how Derek Zhen (USATT# 1177485)'s rating went from 1339 to 1348 at the NYISC January 2024 Open held on 20 Jan 2024 - 20 Jan 2024. 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.