This page explains how Alireza Khatibi (USATT# 214915)'s rating went from 1545 to 1538 at the Swan Sunday League event from 29 Apr 2018. 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.