This page explains how Xiang Ma (USATT# 212864)'s rating went from 1680 to 1684 at the Swan Friday O2000 Team League event from 2 Dec 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.