This page explains how Richard P Weiss (USATT# 49153)'s rating went from 1221 to 1167 at the 2024 Butterfly May Open @ Princeton Pong held on 4 May 2024 - 5 May 2024. 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.