This page explains how Sabrina Zhu (USATT# 91046)'s rating went from 2338 to 2229 at the Sacramento National Ranking Tournament held on 29 Sep 2018 - 30 Sep 2018. 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.