This page explains how Guanglei An (USATT# 198737)'s rating went from 645 to 657 at the SVTTC Sunday U2000 event from 16 Jan 2016. 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.