This page explains how Ming Shi (USATT# 74344)'s rating went from 1643 to 1619 at the Central Carolinas Super League event from 3 Dec 2009. 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.