This page explains how Oren Zeev (USATT# 216793)'s rating went from 1130 to 1100 at the 888 League event from 7 Nov 2021. 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.