This page explains how Richard Robins (USATT# 52803)'s rating went from 1445 to 1320 at the Rainbow Lakes Table Tennis Club event from 7 Dec 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.