This page explains how John Mark Wetzler (USATT# 11058)'s rating went from 2168 to 2133 at the Trolley Car TTC October 2016 Open held on 29 Oct 2016 - 30 Oct 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.