This page explains how Royce Zuniga (USATT# 86194)'s rating went from 1642 to 1558 at the Newgy Akron Open held on - 8 Jun 2013. 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.