This page explains how Mark Malench (USATT# 64047)'s rating went from 1563 to 1559 at the West Jersey Table Tennis Club League event from 17 Jan 2019. 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.