This page explains how Ai Hong Deng (USATT# 26418)'s rating went from 1390 to 1400 at the Boston TTC Div.B event from 20 Feb 2017. 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.