This page explains how Si-Dung Lam (USATT# 65505)'s rating went from 1789 to 1791 at the 2015 Summer State Games of Oklahoma held on - 20 Jun 2015. 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.