This page explains how Eric Purwaka (USATT# 926315)'s rating went from 1141 to 1130 at the Austin Table Tennis League event from 1 Nov 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.