This page explains how Harry Xin He (USATT# 81571)'s rating went from 1397 to 1422 at the 19th Annual Decatur Open held on - 21 Aug 2010. 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.