This page explains how Onur Celen (USATT# 268442)'s rating went from 1542 to 1541 at the Hot Shot League event from 16 Feb 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.