This page explains how Christopher Rosin (USATT# 926905)'s rating went from 1623 to 1639 at the HITTA Weekly League event from 14 Nov 2021. 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.