This page explains how Kenneth J Nissel (USATT# 268615)'s rating went from 1550 to 1511 at the Central Carolinas Super League event from 1 Jul 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.