This page explains how Siamak Shamouilzadeh (USATT# 98184)'s rating went from 1663 to 1596 at the Sacramento Spring Open held on 11 Jun 2022 - 11 Jun 2022. 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.