This page explains how Daniel Guttman (USATT# 20650)'s rating went from 1421 to 1415 at the NJTTC Tuesday V League event from 11 Jul 2023. 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.