This page explains how Dianren Wei (USATT# 212195)'s rating went from 2542 to 2548 at the T2 Challenge held on 4 Mar 2021 - 8 Apr 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.