This page explains how Sam Hsieh (USATT# 124821)'s rating went from 2031 to 2051 at the Swan Friday O2000 Team League event from 8 Apr 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.