This page explains how Weilu Zhang (USATT# 154618)'s rating went from 1563 to 1546 at the HCTT Tuesday Night League event from 20 Dec 2016. 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.