This page explains how Jie Hu (USATT# 1949)'s rating went from 1675 to 1622 at the ICC - Advanced League event from 31 Jan 2011. 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.