This page explains how Rayyan Salman (USATT# 222171)'s rating went from 877 to 880 at the HITTA Weekly League event from 13 May 2022. 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.