This page explains how Nicholas Wetzler (USATT# 61233)'s rating went from 1781 to 1889 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.