This page explains how Ramu Miike (USATT# 273131)'s rating went from 1883 to 1871 at the HITTA Weekly League event from 2 Jul 2023. 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.