This page explains how Makiko Watanabe (USATT# 85615)'s rating went from 1247 to 1246 at the Ocala Table Tennis League event from 29 Nov 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.