This page explains how Gilbert Alcindor (USATT# 231468)'s rating went from 1130 to 1120 at the BTTC League event from 7 Jan 2020. 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.