This page explains how Jan Gabriel Diemont (USATT# 198498)'s rating went from 440 to 422 at the SVTTC Sunday U2000 event from 7 Nov 2015. 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.