This page explains how Eugene Zheng (USATT# 19920)'s rating went from 2012 to 2012 at the Spttc Saturday Night League event from 1 Jun 2019. 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.