This page explains how Ethan Ruan (USATT# 91924)'s rating went from 1972 to 1965 at the 2016 Triangle Two Person Winter Teams Round Robin Open Tournament held on 30 Jan 2016 - 31 Jan 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.