This page explains how John C. Fredrickson (USATT# 5901)'s rating went from 1730 to 1720 at the West Central Table Tennis event from 25 Feb 2017. 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.