This page explains how Ying Xie (USATT# 212865)'s rating went from 1845 to 1819 at the SVTTC Sunday U2000 event from 27 Oct 2013. 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.