This page explains how George S. Aitken (USATT# 3797)'s rating went from 1234 to 1285 at the 2016 US Open held on 12 Dec 2016 - 17 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.