This page explains how Kash Noorani (USATT# 216131)'s rating went from 1985 to 1974 at the Swan Sunday League event from 10 Dec 2017. 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.