This page explains how Kevin Yang (USATT# 220984)'s rating went from 1889 to 1890 at the NJTTC Thursday Adv League event from 5 Aug 2021. 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.