This page explains how Quincy Heen-Jung Lee (USATT# 275676)'s rating went from 975 to 980 at the 888 League event from 23 Apr 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.