This page explains how Xiaofei Ren (USATT# 93563)'s rating went from 1604 to 1602 at the SVTTC Sunday U2000 event from 28 Dec 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.