This page explains how Wenfang Lei (USATT# 198069)'s rating went from 1919 to 1918 at the ASLT League event from 1 Sep 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.