This page explains how Liren Zhang (USATT# 1157612)'s rating went from 718 to 818 at the Westchester October 2020 Little Open held on 24 Oct 2020 - 25 Oct 2020. 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.