This page explains how Kevin Hanna (USATT# 1131710)'s rating went from 1219 to 1212 at the SATTA League event from 22 Nov 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.