This page explains how Joshua Tran (USATT# 71477)'s rating went from 1844 to 1820 at the 2012 Butterfly Cary Cup Championships held on - 18 Mar 2012. 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.