This page explains how Arkaprabho Ghosh (USATT# 85039)'s rating went from 1563 to 1558 at the The Top Spin Saturday League event from 29 Sep 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.