This page explains how Derrick Phan (USATT# 91909)'s rating went from 451 to 596 at the Concord Cup Youth Open held on - 26 Oct 2014. 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.