This page explains how Jerry Jirimutu (USATT# 198992)'s rating went from 1221 to 1208 at the Austin Table Tennis League event from 29 Mar 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.