This page explains how Dalton Adkins (USATT# 219872)'s rating went from 1209 to 1191 at the Eastern Kentucky Table Tennis event from 20 Dec 2018. 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.