This page explains how Thilina Piyadasa (USATT# 75317)'s rating went from 2559 to 2552 at the Homenetmen Ararat Open held on - 18 Apr 2010. 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.