This page explains how Jonathan Qin (USATT# 92665)'s rating went from 887 to 885 at the AZ PTTC Wednesday event from 26 Mar 2014. 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.