This page explains how Alireza Khatibi (USATT# 214915)'s rating went from 1935 to 1924 at the Swan Sunday League event from 24 Mar 2019. 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.