This page explains how Leslaw Hakalo (USATT# 223119)'s rating went from 1691 to 1690 at the Experior Club League event from 3 Feb 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.