This page explains how Weiguo Jiang (USATT# 94360)'s rating went from 515 to 513 at the Triangle September 2015 Open held on - 13 Sep 2015. 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.