This page explains how Slava Tenenbaum (USATT# 27623)'s rating went from 1257 to 1258 at the Experior Club League event from 4 Oct 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.