This page explains how Joshua Tran (USATT# 71477)'s rating went from 1934 to 1931 at the MDTTC Saturday League event from 26 May 2013. 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.