This page explains how Royce Zuniga (USATT# 86194)'s rating went from 1513 to 1509 at the Newgy Cincinnati Open held on - 10 May 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.