This page explains how Raul Bilecky (USATT# 271379)'s rating went from 1500 to 1490 at the BTTC League event from 16 May 2023. 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.