This page explains how Nelson Yu (USATT# 65178)'s rating went from 2082 to 2145 at the 2011 Berkeley Open on the JOOLA NA Tour held on - 25 Sep 2011. 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.