This page explains how Samuel Medina (USATT# 83569)'s rating went from 1876 to 1874 at the GHTTC November 2015 Open held on - 8 Nov 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.