This page explains how Kef Noorani (USATT# 217865)'s rating went from 1449 to 1438 at the Swan Sunday League event from 26 Jan 2020. 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.