This page explains how Ken Dewhirst (USATT# 52400)'s rating went from 1261 to 1260 at the Dana Point Open held on - 15 Jul 2012. 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.