This page explains how Kevin Zhou (USATT# 82151)'s rating went from 1935 to 1915 at the 2017 Triangle Winter Two Person Teams Tournament held on 21 Jan 2017 - 22 Jan 2017. 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.