This page explains how Sergey Semenov (USATT# 97877)'s rating went from 1440 to 1380 at the Swan Sunday League event from 25 Feb 2024. 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.