This page explains how Ryan Ekdahl (USATT# 1151106)'s rating went from 1409 to 1443 at the ICC - Advanced League event from 15 Feb 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.