This page explains how Jack Huang (USATT# 51870)'s rating went from 1680 to 1631 at the South Shore Sports/Butterfly Open held on - 26 Oct 2014. 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.