This page explains how Thomas Koh (USATT# 93940)'s rating went from 1846 to 1877 at the Magic Spin Open held on - 5 Dec 2015. 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.