This page explains how Swathi Giri (USATT# 89190)'s rating went from 19 to 15 at the ICC - Entry Level League event from 29 Jan 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.