This page explains how Jyoti Ghosh (USATT# 92815)'s rating went from 1289 to 1270 at the Austin Table Tennis League event from 15 Dec 2011. 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.